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Journal articles on the topic 'BaTiO3'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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1

Fan, Guoliang, Liu Zhao, Cairong Gong, Jia Ma, and Gang Xue. "Effect of Supports on Soot Oxidation of Copper Catalysts: BaTiO3 Versus Fe2O3@BaTiO3 Core/Shell Microsphere." Nano 11, no. 01 (2016): 1650010. http://dx.doi.org/10.1142/s1793292016500107.

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Copper catalysts prepared using two kinds of supports (BaTiO3 and Fe2O3@BaTiO[Formula: see text] have been tested for soot combustion. Perovskite-type oxide BaTiO3 shows excellent properties as support but has small specific surface area. Fe2O3@BaTiO3 core/shell microspheres, as improved support of BaTiO3 support, were fabricated by a hydrothermal-annealing approach. Fe2O3@BaTiO3 support has large specific surface area, which optimizes the contact condition of the gas-soot-catalyst three-phase reaction. Due to the Cu-Fe2O3@BaTiO3 interaction, the redox properties of copper are improved. Soot c
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2

Xie, Sujing, George E. Sterbinsky, Bruce W. Wessels, and Vinayak P. Dravid. "Defect and Interfacial Structure of Heteroepitaxial Fe3O4/BaTiO3 Bilayers." Microscopy and Microanalysis 16, no. 3 (2010): 300–305. http://dx.doi.org/10.1017/s1431927610000255.

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AbstractThe defect and interfacial structure in a Fe3O4/BaTiO3 heteroepitaxial bilayer was investigated by scanning transmission electron microscopy. The results show that the Fe3O4 film grew epitaxially on BaTiO3. The orientation relationship between Fe3O4, BaTiO3 and MgO is [100]Fe3O4//[100]BaTi3O//[100]MgO and (010)Fe3O4//(010)BaTiO3//(010)MgO. An initial interfacial nucleation layer was formed that partially accommodated the lattice mismatch strain between BaTiO3 and MgO. This investigation indicates that the formation of this buffer layer provides a high-quality BaTiO3 surface for subsequ
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3

Huang, Jin Tao, Tomoya Imura, and Norimasa Sakamoto. "Synthesis of Barium Titanate Nanoparticles from Decomposition of Barium Titanyl Oxalate Tetrahydrate with Aid of Supercritical Water." Advanced Materials Research 463-464 (February 2012): 781–87. http://dx.doi.org/10.4028/www.scientific.net/amr.463-464.781.

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A novel process of BaTiO3 manufacture was conducted by using supercritical water. Preparation of BaTiO3 nanoparticles was investigated from decomposition of BaTiO(C2O4)2•4H2O (BTOT) with aid of supercritical water for the first time. When BTOT was exposed to supercritical water around 673 K and 30 MPa, it decomposed quickly in 5-22 seconds. The products formed strongly reply on environmental conditions. BaCO3 and TiO2 were always observed as the products in the absence of alkaline additives. BaTiO3 nanoparticles with specific surface area as high as 12~14 m2/g were able to be obtained under st
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4

Gust, M. C., N. D. Evans, and M. L. Mecartney. "Crystallization of barium titanate thin films synthesized via sol-gel processing." Proceedings, annual meeting, Electron Microscopy Society of America 53 (August 13, 1995): 258–59. http://dx.doi.org/10.1017/s0424820100137665.

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Sol-gel processing of oxide thin films offers the potential to generate different microstructures by varying process parameters such as water of hydrolysis, chemical precursor, or substrate. For this work, barium titanate (BaTiO3) thin films were prepared by the sol-gel method in order to try and generate different microstructures for dielectric measurements. However, for BaTiOs prepared using alkoxide precursors, the final microstructures of the films were found to be almost process independent. Films using different precursors, different substrates, and different amounts of water of hydrolys
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5

Chun, C. M., A. Navrotsky, and I. A. Aksay. "Aggregation growth of nanometer-sized BaTiO3 particles." Proceedings, annual meeting, Electron Microscopy Society of America 53 (August 13, 1995): 188–89. http://dx.doi.org/10.1017/s0424820100137318.

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Nanocrystalline BaTiO3 particles are synthesized under hydrothermal conditions by the reaction of nanosized TiO2 colloids with aqueous solutions of Ba(OH)2 at 80°C. A dissolution-precipitation mechanism is proposed for the formation of BaTiOs by this route, because suspended TiO2 nano-particles dissolve into Ba(OH)2 solution, supersaturate the solution phase, and subsequently precipitate BaTiOs particles. The origin of the rough "raspberry-like" BaTiOs particles during growth stages can be explained by one of two mechanisms: (i) the morphological instability at the growth front during continuo
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6

Armstrong, T. R., and R. C. Buchanan. "Influence of Zro2 on the microstructure of BaTiO3." Proceedings, annual meeting, Electron Microscopy Society of America 45 (August 1987): 378–79. http://dx.doi.org/10.1017/s0424820100126688.

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Ceramic capacitor materials are typically based on ferroelectric perovskite structures such as BaTiO3. The desirable electrical properties can be improved by isovalent additions of cations such as Ca2+ for Ba2+ and Zr4+ for Ti4+ These additions are aliostructural with the BaTiOg perovskite lattice and create a wide range of solid solutions and property modifications. Additions of ZrO2 both decrease and broaden the dielectric constant peak at the Curie temperature and have been shown to increase the lattice parameter of BaTiO3 resulting in a decrease in the c/a ratio. ZrO2 is believed to affect
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7

Yue, Xin Yan, Hong Qiang Ru, Rong Tu, and Takashi Goto. "Properties of Polycrystalline BaTi2O5 Substituted with MgO Prepared by a Floating Zone Method." Advanced Materials Research 311-313 (August 2011): 1144–47. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.1144.

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MgO substituted polycrystalline BaTi2O5 (BT2), Ba1-xMgxTi2O5 (BMT2), was prepared by a floating zone method (FZ-melting). The dielectric property of BMT2 was investigated bySubscript text an AC impedance method. At x = 0.005 MgO, the permittivity (r) showed the maximum value of 5800 for FZ-melted specimens. The Curie temperature (Tc) decreased with increasing x and the permittivity showed a flat peak at x ≥ 0.03. Second phases of BaTiO3, Ba6Ti17O40 and Ba4MgTi11O27 were identified in polycrystalline BMT2. BaTiO3 and Ba6Ti17O40 could be due to the decomposition of BT2 at high temperatures.
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8

Ahamed, Maqusood, and M. A. Majeed Khan. "Enhanced Photocatalytic and Anticancer Activity of Zn-Doped BaTiO3 Nanoparticles Prepared through a Green Approach Using Banana Peel Extract." Catalysts 13, no. 6 (2023): 985. http://dx.doi.org/10.3390/catal13060985.

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Perovskite barium titanate (BaTiO3) has received a lot of interest due to its extraordinary dielectric and ferroelectric properties, along with its moderate biocompatibility. Here, we investigated how Zn doping tuned the physicochemical characteristics, photocatalytic activity, and anticancer potential of BaTiO3 nanoparticles synthesized from banana peel extract. XRD, TEM, SEM, EDS, XPS, BET, Raman, and PL were utilized to characterize the as-synthesized pure and Zn (1 and 3 mol%)-doped BaTiO3 nanoparticles. All of the synthesized samples showed evidence of the BaTiO3 tetragonal phase, and the
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9

Zhang, Ping Ping, Jing Man, Hong Sheng Wang, et al. "Preparation and Properties of Si3N4-BaTiO3 Composite Ceramics." Solid State Phenomena 281 (August 2018): 646–51. http://dx.doi.org/10.4028/www.scientific.net/ssp.281.646.

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Si3N4-BaTiO3 composite ceramics, a type of high dielectric materials applied in the multifunction radome, were prepared by gas pressure-sintering method. The influences of BaTiO3 power content on the mechanical performances, dielectric properties and microstructure of Si3N4-BaTiO3 composite ceramics were investigated. The results showed that the sintering density, the elastic modulus and the flexural strength of Si3N4-BaTiO3 composite ceramics all firstly increased and then decreased along with the increase of BaTiO3 power in sample. Meanwhile, Relationship between BaTiO3 power content and die
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10

Zhao, L., A. T. Chien, F. F. Lange, and J. S. Speck. "Microstructural development of BaTiO3 powders synthesized by aqueous methods." Journal of Materials Research 11, no. 6 (1996): 1325–28. http://dx.doi.org/10.1557/jmr.1996.0167.

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The hydrothermal growth of perovskite BaTiO3 powders has been studied by transmission electron microscopy. The growth is carried out under high alkaline conditions (pH — 14) achieved with Ba(OH)2. Anatase (TiO2) is used as a titanium source. The perovskite BaTiO3 nucleates heterogeneously on anatase TiO2 particles with an epitaxial relationship of (001)TiO2 ‖ (001)BaTiO3 and [010]TiO2 ‖ [010]BaTiO3. This epitaxial relationship preserves the parallel alignment of the oxygen octahedra between the structures. A mosaic misorientation between (001)TiO2 and (001)BaTiO3 along 〈110〉 is seen in this re
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11

Zhang, Hui, Xiao Hui Wang, Zheng Bo Shen, and Ya Nan Hao. "Phase Structure of Nanocrystalline BaTiO3 Powders via One-Step Solvothermal Route." Advanced Materials Research 833 (November 2013): 8–12. http://dx.doi.org/10.4028/www.scientific.net/amr.833.8.

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5 nm BaTiO3 powder has been successfully prepared by the one-step solvothermal method. The different grain size BaTiO3 powders have been achieved after calcining the 5 nm Nanocrystalline BaTiO3 powders at 700°C, 850°C and 950°C for 3 h. In-situ heating Raman spectroscopy revealed the dispersive phase transition character in the nanocrystalline BaTiO3 powders. As the BaTiO3 grain size decreases, wider phase transition temperature and the Raman intensity becomes weak. The BaTiO3 powders of the 5 nm nanocrystalline exhibited the similar phase transformations from rhombohedral to orthorhombic to t
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12

Mehmood, Muhammad Farhan, and Amir Habib. "Hydrothermal Synthesis and Structural Characterization of BaTiO3 Powder." Nucleus 60, no. 2 (2023): 168–73. https://doi.org/10.71330/thenucleus.2023.1296.

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The main purpose of the present study was to synthesize and characterize the structural morphology of barium titanate (BaTiO3) powder. The synthesis of BaTiO3 powder was carried out by hydrothermal process using barium hydroxide (Ba(OH)2) and titanium dioxide (TiO2) as precursors in a high-pressure stirred reactor autoclave for a 7-hour reaction time at various temperatures (100, 150 and 180 °C). The physical appearance of the synthesized BaTiO3 powder was white crystalline. X-ray diffraction (XRD), Raman spectroscopy, and scanning electron microscopy (SEM) were used to characterize the BaTiO3
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13

Mehmood, Muhammad Farhan, and Amir Habib. "Hydrothermal Synthesis and Structural Characterization of BaTiO3 Powder." Nucleus 60, no. 2 (2023): 168–73. https://doi.org/10.71330/nucleus.60.02.1296.

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The main purpose of the present study was to synthesize and characterize the structural morphology of barium titanate (BaTiO3) powder. The synthesis of BaTiO3 powder was carried out by hydrothermal process using barium hydroxide (Ba(OH)2) and titanium dioxide (TiO2) as precursors in a high-pressure stirred reactor autoclave for a 7-hour reaction time at various temperatures (100, 150 and 180 °C). The physical appearance of the synthesized BaTiO3 powder was white crystalline. X-ray diffraction (XRD), Raman spectroscopy, and scanning electron microscopy (SEM) were used to characterize the BaTiO3
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14

Habib, Amir, Nils Stelzer, and Roland Haubner. "Fabrication of BaTiO3-PMMA Polymer Nanocomposite Thin / Thick Films and their Dielectric Properties." Solid State Phenomena 151 (April 2009): 108–12. http://dx.doi.org/10.4028/www.scientific.net/ssp.151.108.

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Thin and thick BaTiO3-polymer nanocomposite dielectric films were prepared using BaTiO3 nanoparticles and poly (methyl methacrylate) (PMMA). The cubic BaTiO3 (~ 30-60 nm) and tetragonal BaTiO3 (~ 120 nm) synthesized via hydrothermal/solvothermal route were used as nanofillers. The dielectric constant of 9 was achieved for the films of thicknesses in the 150-300 nm range, which corresponds to a capacitance density of 32 nF/cm2. The dissipation factor of the composite film was of a value of 0.04 at 10 kHz. Thick films (~ 16.3 µm) were prepared by doctor blade method and tested for their capacita
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15

Adnan, Septian Rahmat, Budhy Kurniawan, Bambang Soegijono, Nofi Erni, and Taufiqur Rachman. "SINTESIS DAN ANALISIS INTERAKSI SENYAWA MATERIAL KOMPOSIT BATIO3/HAP DAN KOMPOSIT PVDF/ BATIO3/HAP DENGAN METODE SOLUTION MIXING." AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin 10, no. 2 (2024): 67–73. http://dx.doi.org/10.32832/ame.v10i2.761.

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Fenomena ferroelektrik yang telah secara luas diterapkan diberbagai bidang, terutama bidang otomasi industri, komunikasi, diagnose medis, pertahanan, energi hingga energi baru dan terbarukan. Material ferroelektrik dalam bentuk komposit polimer/keramik yang telah banyak dikembangkan adalah komposit Barium Titanat (BaTiO3)/Polyvinylinede Fluoride (PVDF) dan komposit BaTiO3/Hydroxyapatite (HAp) karena memiliki sifat polarisasi, dielektrik dan breakdownstrength yang baik dan juga relatif murah di pasaran. Tujuan dari penelitian ini adalah Untuk mencari solusi sintesis dari material komposit BaTiO
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16

Gutiérrez-Núñez, Miguel, José Guadalupe Miranda-Hernández, Héctor Herrera-Hernández, José de Jesús Agustín Flores-Cuautle, Ernesto Suaste-Gómez, and Carlos Omar González-Morán. "AECPBDCA Análisis eléctrico de cerámicas piezoeléctricas de BaTiO3 dopadas con Cu y Ag." Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 8, Especial (2020): 91–98. http://dx.doi.org/10.29057/icbi.v8iespecial.6263.

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En esta investigación se estudia el efecto de la incorporación de partículas metálicas de cobre (Cu) y plata (Ag) en la matriz del cerámico de titanito de bario (BaTiO3). La fabricación de estos materiales se realizó mediante la técnica de polvos; a partir de una mezcla, en un molino de giro planetario formando composiciones químicas en polvo de BaTiO3 + 1% Cu, BaTiO3 + 3% Cu, BaTiO3 + 1% Ag, BaTiO3 + 3% Ag, BaTiO3 + 1% Cu & Ag, BaTiO3 + 3% Cu & Ag que posteriormente fueron sometidos a un proceso de prensado para su conformando en muestras de forma cilíndricas y finalmente consolidadas
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17

Nam, Sung Pill, Sung Gap Lee, Seong Gi Bae, and Young Hie Lee. "Electrical Properties BaTiO3 Thick Films with an Interlayer SrTiO3 Thin Films." Solid State Phenomena 124-126 (June 2007): 659–62. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.659.

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The BaTiO3/SrTiO3 heterolayered thick films were fabricated by two different methods – thick films of BaTiO3 by screen printing method on alumina substrates electrodes with Pt, thin films of SrTiO3 by the spin-coating method on BaTiO3 thick films and once more thick films of BaTiO3 by the screen printing method on SrTiO3 layer. The leakage current and the dielectric properties were investigated for effect of various stacking sequence of sol-gel-prepared SrTiO3 layer at interface of BaTiO3 thick films. The insertion of SrTiO3 interlayer yielded BaTiO3 thick films with homogeneous and dense grai
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18

Huang, Ji Quan, Pi Yi Du, Gao Rong Han, and Wen Jian Weng. "Microstructure and Properties of Ni0.5Zn0.5Fe2O4-BaTiO3 Ceramic." Key Engineering Materials 336-338 (April 2007): 779–82. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.779.

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Ni0.5Zn0.5Fe2O4-BaTiO3 composites were prepared by calcining Ni0.5Zn0.5Fe2O4 with BaTiO3 at 1220°C for 3 h. Both μ′ and μ″ of the composites decrease rapidly, but the cut-off frequency shifts to higher level with increasing BaTiO3 content. The dielectric constant of the composites increases quickly with increasing BaTiO3 content below 50% and keeps a high and nearly unchangeable value with increasing BaTiO3 above 50%. The composites with BaTiO3 content between 20% and 40% are suitable to use for the magneto-electric devices under high applied frequency due to its high permeability and low diel
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19

Chakraborty, Sahana, A. K. Bera, S. Mollah, and B. K. Chaudhuri. "High dielectric constants in BaTiO3 doped 90V2O5−10Bi2O3 oxide glasses obeying Debye-type dielectric relaxation behavior." Journal of Materials Research 9, no. 8 (1994): 1932–35. http://dx.doi.org/10.1557/jmr.1994.1932.

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BaTiO3 doped 90V2O5−10Bi2O3 (VB) oxide glasses show a larger dielectric constant (102-104) compared to that of the base glass VB (∼102). The VB glass with 15 wt.% BaTiO3 shows the largest dielectric constant, and all the glasses show a Debye-type dielectric relaxation behavior. The increase in dielectric constant appears to be mainly due to the formation of microcrystalline clusters of BaTiO3 (1.8–8 μm, depending on the BaTiO3 concentration present in the base glass). Other than the dilution effect with BaTiO3, the glass-former oxide Bi2O3 also influences the dielectric behavior of BaTiO3 dope
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20

Belous, Anatolii G., Oleg V. Ovchar, Matjaz Valant, and Danilo Suvorov. "Solid-state reaction mechanism for the formation of Ba6−xLn8+2 x/3Ti18O54 (Ln = Nd, Sm) solid solutions." Journal of Materials Research 16, no. 8 (2001): 2350–56. http://dx.doi.org/10.1557/jmr.2001.0322.

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A solid-state reaction mechanism for the formation of Ba6−xLn8+2x /3Ti18O54 (Ln = Nd, Sm) solid solutions has been studied using x-ray powder diffraction, thermal analyses, and transmission electron microscopy (TEM). During the interaction of the starting reagents, Ln2Ti2O7, BaTi4O9, and BaTiO3 are formed. In the next sequence, these three phases react together to form a high-x end member of the Ba6−xLn8+2x /3Ti18O54 homogeneity region (Ba3.9Nd9.4Ti18O54 and Ba3.9Sm9.4Ti18O54). Subsequently, the reaction of Ba3.9Nd9.4Ti18O54 and Ba3.9Sm9.4Ti18O54 with the residual BaTiO3 takes place. TEM inves
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21

Tan, Vu T., La The Vinh, Vu Minh Khoi, Huynh Dang Chinh, Pham Van Tuan, and Tran Ngoc Khiem. "A New Approach for the Fabrication of Tetragonal BaTiO3 Nanoparticles." Journal of Nanoscience and Nanotechnology 21, no. 4 (2021): 2692–701. http://dx.doi.org/10.1166/jnn.2021.19097.

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For the first time, the BaTiO3 nano-sized particles were obtained through solid-state reaction by employing the titanium oxide nanoparticle. Meanwhile, by using TiO2 with micro-sized particles, the synthesized BaTiO3 shows the micro-sized. The XRD pattern confirms that both BaTiO3 nano-sized and micro-sized particles display the tetragonal structure. Both SEM and TEM analysis revealed that the size of the nano-sized material is in the range of 30–50 nm; in the meantime, the microsized material shows a size of 500 nm. The Eg of both BaTiO3 micro-sized and nano-sized were calculated by using the
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22

Adnan, Septian Rahmat, Budhy Kurniawan, and Bambang Soegijono. "TINJAUAN PENGEMBANGAN MATERIAL BERBASIS BARIUM TITANAT, KOMPOSIT PVDF/BATIO3 DAN BATIO3/HAP UNTUK APLIKASI ELECTROSTATIC DIELECTRIC ENERGY STORAGE CAPACITOR." Jurnal Rekayasa Mesin 14, no. 2 (2023): 649–76. http://dx.doi.org/10.21776/jrm.v14i2.1423.

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Barium titanate (BaTiO3) is ceramic material that is widely used in various applications..Electrostatic dielectric energy storage capacitor is one of the application of Barium titanate (BaTiO3) material. Composite materials based on barium titanate (BaTiO3) such as Polyvinylidene fluoride (PVDF)/BaTiO3 and BaTiO3/HAp Hydroxyapatite have been developed to improve the electrical properties of the materials. Many research have been reported hat barium titanate in nano phase has a maximum dielectric constant 5000 with particle size range of 30-50 nm. The addition of BaTiO3 composition as a filler
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23

Zheng, Kun, Jian Zhuang, Yi Quan, et al. "The Synthesis and Domain Structures of Single-Crystal-Like Mesoscale BaTiO3 Plates." Crystals 13, no. 3 (2023): 538. http://dx.doi.org/10.3390/cryst13030538.

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The (001) plate-like BaTiO3 piezoelectric micromaterials are synthesized by topochemical microcrystal conversion technique. BaTiO3 plates with a length of 2~10 μm and thickness of 0.5~1.3 μm are obtained. The dependence of morphology on synthesis conditions is discussed in detail. The crystal symmetry and multiscale domain structures of BaTiO3 plates are systematically investigated by various characterizations. X-ray diffraction (XRD) and Raman spectra analyses demonstrate the tetragonal symmetry of the (001) oriented BaTiO3 plates at room temperature. The domain configurations of the micron B
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Lee, Jung Min, Myoung Pyo Chun, Hyo Soon Shin, Byung Ik Kim, and Jong Heun Lee. "Characterization and Synthesis of Additive Coated BaTiO3 Nano-Powder." Advanced Materials Research 881-883 (January 2014): 964–67. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.964.

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Two different BaTiO3 (160nm) nanopowders coated with Y and with Dy were fabricated by an aqueous chemical coating method, and their dielectric properties and microstructures were investigated with X-ray diffraction, Impedance analyzer, SEM and TEM. Y and Dy were coated on the BaTiO3 powder using nitrates. Coated BaTiO3 powders were pressed in a disk shape and sintered at 1150~1200°C for 2 hours in reduced atmosphere of 10%H2 - 90%N2. Coating layer of the BaTiO3 particle was thin with a thickness of 3 ~ 5nm. Coated BaTiO3 sintered sample exhibited a larger lattice parameter (a, c) and smaller t
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25

Takizawa, Kayo, Takuya Hoshina, Hirofumi Kakemoto, Takaaki Tsurumi, Yoshihiro Kuroiwa, and Satoshi Wada. "Control of Mesoscopic Particle Structure in Barium Titanate Nanoparticles and their Dielectric Properties." Key Engineering Materials 350 (October 2007): 59–62. http://dx.doi.org/10.4028/www.scientific.net/kem.350.59.

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Barium titanate (BaTiO3) fine particles were prepared using the 2-step thermal decomposition method of barium titanyl oxalate. At the 2nd step of this method, the intermediate compound (Ba2Ti2O5·CO3) was decomposed into BaTiO3 and CO2 under various degrees of vacuum pressure. As a result, the particle size of prepared BaTiO3 nanoparticles decreased with decreasing pressure. Moreover, the dielectric constants of these BaTiO3 nanoparticles were measured using the powder dielectric measurement method using slurry. The dielectric constant of BaTiO3 nanoparticles increased with decreasing pressure
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26

Xia, Yunqing, Guo Lin, Chenchen Liu, Zhongxiang Bai, Shuning Liu, and Xiaobo Liu. "Enhancing the dielectric properties of poly (arylene ether nitrile) by introducing co-modified BaTiO3." Journal of Physics: Conference Series 2338, no. 1 (2022): 012040. http://dx.doi.org/10.1088/1742-6596/2338/1/012040.

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Abstract In this study, a facile co-modification of dopamine (DA) and methylphenyldimethoxysilane (MPDS) was utilized to functionalize barium titanate (BaTiO3) nanoparticles with organic functional film. With the organic film coated on surface of BaTiO3, the compatibility between BaTiO3 and PEN matrix was greatly enhanced, which led to the promotion in thermal and dielectric properties. Results indicated that the glass transition temperature (Tg) of BaTiO3@(MPDS+PDA)/PEN composite showed increment from 171.9°C to 181.2°C. Besides, the dielectric constant of PEN composite containing 20 wt.% of
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27

Lin, Huixing, Wei Chen, and Lan Luo. "Effects of V2O5 on the synthesis of Ba2Ti9O20 powders." Journal of Materials Research 20, no. 10 (2005): 2741–44. http://dx.doi.org/10.1557/jmr.2005.0333.

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Phase-pure Ba2Ti9O20 powders were made by doping 3 wt% of V2O5 to a Ba:Ti = 2:9 molar composition, and the effects of the dopant on the phase formation were investigated. The study shows that BaTiO3, BaTi2O5, and BaTi4O9 were the intermediate phases before the formation of Ba2Ti9O20 for samples with or without V2O5. However, with V2O5 doping, the temperature at which Ba2Ti9O20 occurred were lowered from 1150 to 1050 °C and single phase Ba2Ti9O20 powders was easily obtained at 1150 °C for 2 h. Microstructure of the powders was examined by field emission scanning electron microscopy. No evidence
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28

Zhang, Yan Jie, Wei Guo Fu, Xiang Yun Deng, et al. "Electrical Properties of La2O3-Doped BaTiO3 Ceramics." Advanced Materials Research 148-149 (October 2010): 1222–25. http://dx.doi.org/10.4028/www.scientific.net/amr.148-149.1222.

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Hysteresis loop and dielectric properties of lead-free BaTiO3-La2O3 piezoelectric ceramics and BaTiO3 ceramic compared with pure BaTiO3 has been systematically studied. The amount of La2O3 addition ranged from 0.3~0.5mol% by controlling the sintering temperature. Dielectric properties of BaTiO3-La2O3 were promoted after the addition of La2O3, the maximum value of dielectric constant reached 8,624, recently. The role of La2O3 on the solid-state sintering of BaTiO3 is discussed on the basis of the solid-solution defect model.
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29

Kondo, Yusuke, Tetsuo Shimura, Wataru Sakamoto, and Toshinobu Yogo. "Field-assisted synthesis of BaTiO3 particle/polyvinylbutyral composite film." Journal of Materials Research 21, no. 7 (2006): 1843–48. http://dx.doi.org/10.1557/jmr.2006.0228.

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BaTiO3 particle/polyvinylbutyral composite films were synthesized from titanium-organics and barium ions in aqueous solution using a direct current (dc) field. Titanium-organic films on stainless substrates were reacted with barium nitrate solution under dc field. BaTiO3 nanoparticles were formed in the precursor film at temperatures as low as 30 °C at atmospheric pressure. The crystallization of BaTiO3 particles was dependent on the synthetic conditions, such as applied field, reaction time, and temperature. Crystalline BaTiO3 particles were synthesized in the polymer matrix at 2.3 V/cm and 5
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Park, Jae Sung, and Young Ho Han. "Powder Characteristics and Sintering Behavior of SiO2 Coated BaTiO3." Materials Science Forum 534-536 (January 2007): 1065–68. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.1065.

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The Powder characteristics and sintering behavior of SiO2 coated BaTiO3 were studied. BaTiO3 powders were synthesized by the liquid mix method developed by Pechini, and silica coating was prepared by alkoxide hydrolysis method with TEOS and ethanol. The particle size of the BaTiO3 powders was ~35 nm and the thickness of the SiO2 coating layer was ~5 nm. As the SiO2 content increased, the SiO2 layers improved the powder dispersion by increasing electrostatic repulsion between the BaTiO3 particles. The Zeta potential of SiO2 coated BaTiO3 was getting close to that of pure silica with a more nega
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Nguyen, Nga Viet Thi, Hang Thanh Le Nguyen, Thanh Thi Ho, et al. "Photocatalytic degradation of methylene blue from an aqueous solution using SnO2/BaTiO3 heterostructure." Vietnam Journal of Catalysis and Adsorption 12, no. 1 (2023): 35–41. http://dx.doi.org/10.51316/jca.2023.006.

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In this study, the SnO2/BaTiO3 heterostructure has been fabricated by firstly preparing SnO2 and BaTiO3 through, followed by coupling SnO2 and BaTiO3 by the hydrothermally method. The samples are denoted as SBTO-x:y, where x:y is weight ratio of SnO2 và BaTiO3 (x:y = 1:3, 1:5 và 1:7) in the reaction mixtures. The obtained materials were characterized by XRD, IR, EDS-mapping, SEM. The photocatalytic activity of SBTO-x:y SnO2 and BaTiO3 samples was assessed by degradation of methylene blue in aqueous solution under sunlight. Among them, SBTO-1:5 exhibited the best performance. An enhancement in
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32

Deng, Xiang Yun, Long Tu Li, Xiao Hui Wang, and Zhi Lun Gui. "First Principle Study on Electronic Structure of Nanocrystalline BaTiO3 Ceramics." Key Engineering Materials 336-338 (April 2007): 2510–12. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.2510.

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The full potential linearized augmented plane wave method within the generalized gradient approximation was used to calculate electronic structure of nanocrystalline BaTiO3 ceramics. We calculated the total and partial density of states of 50 nm BaTiO3 ceramics. The results show that the atoms distribution of nanograin BaTiO3 ceramics is different from those of coarse BaTiO3 ceramics. It is also revealed that the hybridization between Ti 3d and O 2p is very strong, which is very important to the ferroelectric stability of nanocrystalline BaTiO3 ceramics.
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Setyadi, Ayu Uswatu Lissa Sapta, Yofentina Iriani, and Fahru Nurosyid. "Penumbuhan Lapisan Tipis Barium Titanat (BaTiO3) menggunakan Metode Sol-Gel dengan Variasi Mol." Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) 2 (November 28, 2017): 36. http://dx.doi.org/10.20961/prosidingsnfa.v2i0.16360.

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<p class="AbstractEnglish"><strong>Abstra</strong><strong>ct</strong><strong>:</strong><strong> </strong>Preparation of Barium Titanate thin film (BaTiO3) has been done on Quartz substrate using sol gel method with spin coating technique. A thin film BaTiO3 wase made with a mole variation of 0.4 mol and 0.8 mol at a rotation speed of 3000 rpm. The samples were annealed at 400 ° C with 30 minutes stand-up time and at 900 ° C with 2 hours stand-up time and a heating rate of 5 ° C per minute. Characterization of optical properties samples was
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34

Lin, Bao Ping, Hong Jian Liu, Yue Ming Sun, and Chun Wei Yuan. "Preparation and Characterization of Polyimide/BaTiO3 Nanocomposite Films with Lower Infrared Emissivity." Key Engineering Materials 326-328 (December 2006): 1749–52. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.1749.

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The silicon-containing polyimide/BaTiO3 nanocomposite films were prepared by mixing the silicon-containing poly(amic acid) based on bis(3,4-dicarboxyphenyl)dimethylsilane dianhydride and 4,4'-Oxydianiline with BaTiO3 nanoparticles, followed by thermal imidization. Structure and properties of the nanocomposite films were measured with FTIR, SEM, XPS and DMTA. The results indicated that the interfacial interaction between BaTiO3 nanoparticles and the silicon-containing polyimide was conspicuous, and that BaTiO3 nanoparticles appeared to be better dispersed in the polyimide matrix at a higher BaT
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35

Wada, Satoshi, Takuya Hoshina, Hiroaki Yasuno, et al. "Size Effect of Dielectric Properties for Barium Titanate Particles and Its Model." Key Engineering Materials 301 (January 2006): 27–30. http://dx.doi.org/10.4028/www.scientific.net/kem.301.27.

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Powder dielectric measurement of barium titanate (BaTiO3) fine particles from 17 to 1,000 nm revealed a maximum dielectric constant at a certain particle size. The sizes with maximum dielectric constants were strongly dependent on preparation methods. When BaTiO3 fine particles were prepared in vacuum of 10-2 torr, a dielectric maximum of 15,000 was observed at 70 nm. On the other hand, when BaTiO3 fine particles were prepared in air, a dielectric maximum of 5,000 was observed at 140 nm. Structure refinement of BaTiO3 particles using a Rietveld method revealed that all of BaTiO3 particles were
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36

Zhou, Long, R. Yu, K. Zhu, et al. "Preparation of Plank-Like BaTiO3 by Hydrothermal Soft Chemical Process from Layered Titanate Precursors." Key Engineering Materials 336-338 (April 2007): 66–68. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.66.

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The influence of processing parameters on the morphology of hydrothermally derived BaTiO3 powders was investigated. Layered H2Ti3O7 with plank-like morphology were used as the Ti-precursor materials. The BaTiO3 powders were characterized by XRD and SEM. Lower Ba/Ti ratio is benefit for preparation of BaTiO3 particles which retains the morphology of the precursor. The BaTiO3 particles obtained at 200°C for 24h were large, uniform, and plank-like particles. Extending the hydrothermal temperature or the hydrothermal time does not help to synthesize BaTiO3 powders of large size and uniform morphol
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37

Nakashima, Kouichi, Shogo Iwatsuki, Ichiro Fujii, and Satoshi Wada. "Preparation of Barium Titanate/Strontium Titanate Accumulation Ceramics with Necking Structure of Strontium Titanate Nanocubes." Key Engineering Materials 582 (September 2013): 67–70. http://dx.doi.org/10.4028/www.scientific.net/kem.582.67.

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Barium titanate (BaTiO3) / Strontium titanate (SrTiO3) accumulation ceramics with necking structure of SrTiO3 nanocubes were prepared using a solvothermal method. XRD measurements confirmed SrTiO3 and BaTiO3 with a perovskite structure. The XRD peak intensities of the BaTiO3 increased significantly as the solvothermal reaction was repeated. After heat treatment of the SrTiO3 at 900°C, the particles grew larger and formed necked contacts with each other. As the solvothermal reaction was repeated in order to coat with BaTiO3, the density increased, the porosity decreased, and the thickness of th
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38

Park, Jae Sung, and Young Ho Han. "Effects of MgO Coating on Electrical Properties of BaTiO3." Solid State Phenomena 124-126 (June 2007): 811–14. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.811.

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Effects of MgO coating on electric properties of BaTiO3 have been studied in terms of microstructural development and substitution of Mg ion. MgO coated BaTiO3 particles were prepared by a homogeneous precipitation method and other powders by a conventional mixing method for a parallel study. MgO coated BaTiO3 exhibited homogeneous microstructure compared with mixed samples. XRD analysis revealed that Mg substitution for the Ti site in the MgO mixed sample was much greater than in the coated one. MgO coated BaTiO3 showed higher dielectric constants at the Curie temperature whereas mixed ones h
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39

He, Long, Jing Wang, Zhong Yang, Kongjun Zhu, and Chaoyong Deng. "Dielectric and energy storage properties of PVDF/Nd-BaTiO3@Al2O3 composite films." Functional Materials Letters 12, no. 03 (2019): 1950034. http://dx.doi.org/10.1142/s1793604719500346.

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Flexible Nd-doped BaTiO3@Al2O3/polyvinylidene fluoride (PVDF) composites have been successfully developed. With the reaction temperature of 70∘C, Nd-doped BaTiO3@Al2O3 particles display uniform core–shell structures and disperse well in the PVDF matrix. Due to the benign dielectric properties of Nd-doped BaTiO3 and great suppression of the Al2O3 coating on the leakage current and dielectric loss, the Nd-doped BaTiO3@Al2O3/PVDF composites with different Nd-doped BaTiO3@Al2O3 filling ratios (0–4[Formula: see text]vol.%) exhibit relatively good dielectric and energy storage performance. Among the
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40

Wada, Satoshi, Masanori Ohishi, Kayo Takizawa, Takuya Hoshina, Hirofumi Kakemoto, and Takaaki Tsurumi. "Size Dependence of Dielectric Properties for Barium Titanate Nanoparticles Prepared under Various Vacuum Atmospheres." Key Engineering Materials 320 (September 2006): 139–42. http://dx.doi.org/10.4028/www.scientific.net/kem.320.139.

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Barium titanate (BaTiO3) fine particles were prepared using the 3-step thermal decomposition method of barium titanyl oxalate under various vacuum atmospheres. In this method, the first two steps prepared BaTiO3 nanoparticles with 30 nm, and at the 3rd step, BaTiO3 nanoparticles were heat-treated at various temperature and degree of vacuum. As a result, as degree of vacuum is high, particle size of BaTiO3 fine particles decreased. Moreover, the dielectric constant of BaTiO3 fine particles was measured using the powder dielectric measurement method with slurry. The dielectric constant of these
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41

Zhang, Baodan, Haibo Jin, Xu Liu, Xiaoyan Guo, Guangxiang He, and Suohe Yang. "The Formation and Application of Submicron Spherical BaTiO3 Particles for the Diffusion Layer of Medical Dry Films." Crystals 9, no. 11 (2019): 594. http://dx.doi.org/10.3390/cryst9110594.

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Submicron spherical barium titanate (BaTiO3) was prepared by batch precipitation in an alkaline solution of a BaCl2–TiCl4–NaOH reaction system. The influence of various parameters on the morphology of BaTiO3 powders was investigated in this study. Spherical BaTiO3 particles can be obtained by reacting for 20 min, which was used to prepare the dry sheet of a medical dry chemical reagent. The morphology of the particles was affected by the stirring speed and the alkaline concentration; the particle size decreased as the stirring speed increased. The hydroxyl ion in the solution acts as a catalys
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42

Ren, Peng Rong, Qian Wang, Xin Wang, Ting Lian, and Gao Yang Zhao. "Tunable Dielectric Properties of BaTiO3/La2O3 Composite Ceramics." Materials Science Forum 848 (March 2016): 210–16. http://dx.doi.org/10.4028/www.scientific.net/msf.848.210.

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BaTiO3/La2O3 nanopowders were synthesized by a low-temperature soft chemical method, and then the BaTiO3/La2O3 composite ceramics were prepared. X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM) were used to characterize the prepared powders and ceramics. And the dielectric properties of the BaTiO3/La2O3 composite ceramics were studied. The results revealed that some of La3+ ions dissolved into the lattice of BaTiO3 at Ba-site and the rest remained at grain boundaries in oxide form of La2O3. With the content of La2O3 increasing, Curie peak o
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43

Єлісєєв, Є. А., М. Д. Глинчук, Г. М. Морозовська та Я. В. Яковенко. "Полярні властивості та петлі гістерезису у багатошарових тонких плівках типу сегнетоелектрик/віртуальний сегнетоелектрик". Ukrainian Journal of Physics 57, № 10 (2021): 1038. http://dx.doi.org/10.15407/ujpe57.10.1038.

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Використовуючи феноменологічну теорію Ландау–Гінзбурга–Девоншира, розраховано вплив деформацій невідповідності, поверхневої енергії тарозмірних ефектів на фазові діаграми, полярні властивості та петлі гістерезису у багатошарових тонких плівках типу сегнетоелектрик/віртуальний сегнетоелектрик. Вперше досліджено вплив пружних деформацій, що виникають на межі тонка плівка – підкладка внаслідок невідповідності сталих ґратки плівки та підкладки, на фазові діаграми багатошарових тонких плівок складу віртуальний сегнетоелектрик SrTiO3/ сегнетоелектрик BaTiO3. Виявилося, що у багатошарових плівках скл
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44

Pitiphattharabun, Siraprapa, Nicha Sato, Gasidit Panomsuwan, and Oratai Jongprateep. "Electrocatalytic Properties of a BaTiO3/MWCNT Composite for Citric Acid Detection." Catalysts 12, no. 1 (2022): 49. http://dx.doi.org/10.3390/catal12010049.

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Although barium titanate (BaTiO3) shows prominent dielectric properties for fabricating electronic devices, its utilization in electrochemical applications is limited. Thus, this study examined the potential of a BaTiO3-based composite in the detection of a food additive, i.e., citric acid. First, a submicron-scale BaTiO3 powder was synthesized using the solution combustion method. Then, a BaTiO3/multiwalled carbon nanotube (MWCNT) composite was hydrothermally synthesized at BaTiO3:MWCNT mass ratios of 1:1 and 2:1. This composite was used as a working electrode in a nonenzymatic sensor to eval
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45

Ismail, F. A., Rozana Aina Maulat Osman, Mohd Sobri Idris, and N. A. M. Ahmad Hambali. "Structure and Electrical Characteristics of BaTiO3 and Ba0.99Er0.01TiO3 Ceramics." Solid State Phenomena 280 (August 2018): 127–33. http://dx.doi.org/10.4028/www.scientific.net/ssp.280.127.

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Conventional solid state reaction method was used to prepare BaTiO3 and Ba0.99Er0.01TiO3 ceramics. Influence of Er3+ ion incorporation on their structural, microstructural and electrical properties was studied. The phase pure samples were obtained when heated at 1400 °C for overnight. The tetragonal perovskite phase of BaTiO3 and Ba0.99Er0.01TiO3 was confirmed by using X-ray Diffraction (XRD) analysis which is in agreement with results obtained from Rietveld refinement analysis. The lattice parameters and unit cell volume of BaTiO3 increased when doped with Erbium. Microstructural analysis of
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46

Vijatovic, Mirjana, Milos Vasic, Jelena Bobic, Ljiljana Zivkovic, and Biljana Stojanovic. "Effect of powder synthesis method on BaTiO3 ceramics." Processing and Application of Ceramics 2, no. 1 (2008): 27–31. http://dx.doi.org/10.2298/pac0801027v.

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Barium titanate (BaTiO3) has been of practical interest for more than 60 years because of its attractive properties. BaTiO3 can be prepared using different methods, which can have significant influence on the structure and properties of barium titanate ceramics. In this paper powder of BaTiO3 powders were prepared by two methods. The first was synthesis from polymeric precursors through Pechini process which was carried out as a three-stage process from an oganometallic complex, producing cubic BaTiO3 powders with 40-80 nm primary particles. The second was a mechanochemical synthesis from powd
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Shimizu, Nobutaka, Kenichi Myoujin, Takayuki Kodera, and Takashi Ogihara. "Preparation and Dielectric Property of BaTiO3 Nanoparticles by Salt-Assisted Spray Pyrolysis." Key Engineering Materials 566 (July 2013): 281–84. http://dx.doi.org/10.4028/www.scientific.net/kem.566.281.

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BaTiO3 nanopowders were prepared by salt-assisted spray pyrolysis using a flux of KNO3 and NaNO3. Compounds of metal sources are thermally decomposed in the melting flux. Some flux mixtures make a eutectic composition because of the reduced melting point of the flux. The optimum temperature for the preparation of BaTiO3 nanoparticles was 700 °C. When both KNO3 and NaNO3 were used as the flux, the average particle size of the BaTiO3 powders was 40 nm, and the particle distribution was broad. On the other hand, when only KNO3 was used, the average size of BaTiO3 powders was 60 nm, and the partic
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48

Yoon, Songhak, Jürgen Dornseiffer, Detlev Hennings, Christian Pithan, and Rainer Waser. "Microemulsion mediated synthesis of BaTi03-Ag nanocomposites." Processing and Application of Ceramics 3, no. 1-2 (2009): 33–38. http://dx.doi.org/10.2298/pac0902033y.

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BaTiO3 - Ag composite nanopowders were synthesized via microemulsion mediated synthesis through the hydrolytic decomposition of mixed metal alkoxide solutions as precursor for the BaTiO3 and the reduction of silver nitrate in the presence of polyvinylpyrrolidone (PVP) as source for the Ag nanoparticles. The X-ray diffraction (XRD) patterns indicate that BaTiO3 and Ag phases were successfully synthesized in the composite powders. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) show that the synthesized BaTiO3 nanoparticles were aggregates of nanosized primary parti
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49

Rahman, M. K., M. F. Hossain, Kazi Mohammad Shorowordi, and M. A. Matin. "Effect of Sintering Time on Dielectric Properties of Barium Titanate and Nb Doped Barium Titanate." Applied Mechanics and Materials 860 (December 2016): 129–33. http://dx.doi.org/10.4028/www.scientific.net/amm.860.129.

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Barium titanate (BaTiO3) with its perovskite structure is a promising dielectric material for many applications such as transducers, actuators, high-k dielectrics and multilayer ceramic capacitors (MLCC). In this study, we have investigated the effect of sintering time on dielectric properties of BaTiO3 and Nb-doped BaTiO3. BaTiO3 was doped with 0.3 mol % niobium oxide (Nb2O5). At first, nanosized pure BaTiO3 and Nb2O5 doped BaTiO3 were milled, dried and pressed into pellets to prepare green samples. Then, the samples were sintered at 1275°C for different time periods ranging from 2 to 5 hrs.
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50

Qi, Fugang, Shaoqin Peng, Jiachang Bi, et al. "The Effect of Sputtering Target Density on the Crystal and Electronic Structure of Epitaxial BaTiO3 Thin Films." Crystals 14, no. 4 (2024): 304. http://dx.doi.org/10.3390/cryst14040304.

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Barium titanate (BaTiO3) is a promising material for silicon-integrated photonics due to its large electro-optical coefficients, low loss, high refractive index, and fast response speed. Several deposition methods have been employed to synthesize BaTiO3 films. Magnetron sputtering is one of these methods, which offers specific advantages for growing large-scale films. However, there is a scarcity of studies investigating the effect of sputtering target density on the quality of BaTiO3 films. Therefore, this study aims to uncover the effect of sputtering targets on the crystal and electronic st
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