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Journal articles on the topic 'High permittivity ceramics'

Author: Grafiati

Published: 9 March 2023

Last updated: 31 July 2025

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1

Tang, Qingyang, Zhicheng Shi, Shuimiao Xia, et al. "Enhanced dielectric properties of Sr²⁺ and Zr⁴⁺ doped BaTiO₃ colossal permittivity metamaterials." EPJ Applied Metamaterials 11 (2024): 13. http://dx.doi.org/10.1051/epjam/2024012.

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BaTiO3, as one of the most important functional materials of perovskite structure, is widely used in the electronic industry. However, the dielectric permittivity of BaTiO3 remains relatively low, which greatly limits its practical application in metamaterials with colossal dielectric permittivity. In this work, (Ba100−xSrx)(Ti100−yZry)O3 composite ceramics are fabricated via the solid sintering method. Surprisingly, the dielectric properties of (Ba100−xSrx)(Ti100−yZry)O3 composite ceramic materials are strongly dependent on the occupancy of Sr2+ and Zr4+ at the A-sites and B-sites, respective

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2

Wang, Wei, Tingting Fan, Songxiang Hu, et al. "Defect Control of Donor Doping on Dielectric Ceramics to Improve the Colossal Permittivity and Temperature Stability." Coatings 14, no. 8 (2024): 1024. http://dx.doi.org/10.3390/coatings14081024.

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As the demand for miniaturization of electronic devices increases, ceramics with an ABO3 structure require further improvement of the dielectric constant with high permittivity. In the present work, Ba1−1.5xBixTiO3 (BB100xT, x = 0.0025, 0.005, 0.0075, 0.01) ceramics were prepared via a solid-state reaction process. The effect of Bi doping on dielectric properties of lead-free relaxor ferroelectric BaTiO3-based ceramics was studied. The results showed that both colossal permittivity (37,174) and a temperature stability of TCC ≤ ±15% (−27–141 °C) were achieved in BB100xT ceramics at x = 0.5%. Th

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3

Xiong, Zhao Xian, M. Y. Zhou, Hao Xue, Hong Qiu, and F. Xiao. "Characterization of Microwave Ceramics with Low Permittivity and High Quality Factors." Key Engineering Materials 434-435 (March 2010): 244–46. http://dx.doi.org/10.4028/www.scientific.net/kem.434-435.244.

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A new type of porous ceramics, Mg2SiO4, for microwave application with low permittivity and high quality factors were prepared via gel-casting processing in this paper. Microstructure of the ceramics was observed and crystal structure of the samples was also identified. Moreover, emphasis was paid on the characterization of the microwave ceramics. Dielectric properties of the ceramics were measured by an automatic system of microwave measurement, resulting in dielectric constant of 3.51 and quality factor of 11,774 for the ceramic sample at frequency about 10GHz. Mechanical performance of the

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4

Li, Wei, Zhonghua Yao, Hua Hao, Minghe Cao, and Hanxing Liu. "High-Permittivity and Bias-Voltage-Insensitive (Ba,Sr,Ca)TiO3·0.03(Bi2O3·3TiO2) Ceramics with Y5U Specification." Crystals 13, no. 12 (2023): 1627. http://dx.doi.org/10.3390/cryst13121627.

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Class II ceramics are a material with high permittivity but low reliability of their capacitance and bias voltage due to high the temperature sensitivity of their dielectric permittivity. In this work, a BST-based (Ba0.9−xSrxCa0.1)TiO3·0.03(Bi2O3·3TiO2) (x = 0.2, 0.25, 0.3, 0.35, 0.4) composition with Y5U characteristics was investigated through compositional control to develop high-permittivity and voltage-stable ceramic compositions. Sr doping can increase the breakdown strength (Eb) but decreases the Curie temperature (Tc). The composition at x = 0.3 can obtain optimal comprehensive electri

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5

Szwagierczak, Dorota, Beata Synkiewicz-Musialska, Jan Kulawik, and Norbert Pałka. "Sintering, Microstructure, and Dielectric Properties of Copper Borates for High Frequency LTCC Applications." Materials 14, no. 14 (2021): 4017. http://dx.doi.org/10.3390/ma14144017.

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New ceramic materials based on two copper borates, CuB2O4 and Cu3B2O6, were prepared via solid state synthesis and sintering, and characterized as promising candidates for low dielectric permittivity substrates for very high frequency circuits. The sintering behavior, composition, microstructure, and dielectric properties of the ceramics were investigated using a heating microscope, X-ray diffractometry, scanning electron microscopy, energy dispersive spectroscopy, and terahertz time domain spectroscopy. The studies revealed a low dielectric permittivity of 5.1–6.7 and low dielectric loss in t

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6

Hennings, D. F. K., B. Schreinemacher, and H. Schreinemacher. "High-permittivity dielectric ceramics with high endurance." Journal of the European Ceramic Society 13, no. 1 (1994): 81–88. http://dx.doi.org/10.1016/0955-2219(94)90062-0.

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7

Stanculescu, Roxana, Cristina E. Ciomaga, Leontin Padurariu, et al. "Study of the role of porosity on the functional properties of (Ba,Sr)TiO3 ceramics." Journal of Alloys and Compounds 673 (September 15, 2015): 79–87. https://doi.org/10.1016/j.jallcom.2015.03.252.

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The role of porosity on the low and high field dielectric properties was studied in Ba<sub>0.70</sub>Sr<sub>0.30</sub>TiO<sub>3</sub> ceramics with various porosity levels obtained by using lamellar graphite as sacrificial template. The permittivity decreases with increasing porosity, from around <em>ε</em> <em>&sim;</em> 7690 (dense ceramic) down to 380 (ceramic with 29% porosity), while preserving the Curie temperature at about 35 °C. The effective permittivity was discussed by using Effective Medium Approximation and Finite Element Method approaches. The

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8

Lu, Huafei, Yuanhua Lin, Jiancong Yuan, Cewen Nan, and Kexin Chen. "Dielectric and varistor properties of rare-earth-doped ZnO and CaCu3Ti4O12 composite ceramics." Journal of Advanced Dielectrics 03, no. 01 (2013): 1350001. http://dx.doi.org/10.1142/s2010135x1350001x.

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To investigate the multi-functional ceramics with both high permittivity and large nonlinear coefficient, we have prepared rare-earth Tb -and- Co doped ZnO and TiO 2-rich CaCu3Ti4O12 (TCCTO) powders by chemical co-precipitation and sol–gel methods respectively, and then obtained the TCCTO/ ZnO composite ceramics, sintered at 1100°C for 3 h in air. Analyzing the composite ceramics of the microstructure and phase composition indicated that the composite ceramics were composed of the main phases of ZnO and CaCu3Ti4O12 (CCTO). Our results revealed that the TCCTO/ ZnO composite ceramics showed both

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9

KOLAR, D., and D. SUVOROV. "ChemInform Abstract: High Permittivity Microwave Ceramics." ChemInform 27, no. 10 (2010): no. http://dx.doi.org/10.1002/chin.199610337.

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10

Qin, Qun, Tian Guo Wang, and Wen Jun Zhang. "Effect of Er₂O₃ on the Microstructure and Electrical Properties of WO₃ Capacitor-Varistor Ceramics." Advanced Materials Research 233-235 (May 2011): 2503–6. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.2503.

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WO3-based capacitor-varistor ceramics doped with Er2O3 were prepared and the microstructures and nonlinear electrical properties were investigated. The results show that there exist second phase Er10W2O21 on the surface of WO3 grains. Doping Er2O3 in WO3 ceramic can inhibit the grain growth. A small quantity of Er2O3 can significantly improve nonlinear properties of the samples. The permittivity of doped samples was higher than that of the undoped, and the high permittivity makes Er2O3-doped WO3 ceramics be applicable as a kind of capacitor-varistor materials.

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11

Puli, Venkata Sreenivas, Shiva Adireddy, Manish Kothakonda, Ravinder Elupula, and Douglas B. Chrisey. "Low temperature sintered giant dielectric permittivity CaCu3Ti4O12 sol-gel synthesized nanoparticle capacitors." Journal of Advanced Dielectrics 07, no. 03 (2017): 1750017. http://dx.doi.org/10.1142/s2010135x17500175.

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This paper reports on synthesis of polycrystalline complex perovskite CaCu3Ti4O[Formula: see text] (as CCTO) ceramic powders prepared by a sol–gel auto combustion method at different sintering temperatures and sintering times, respectively. The effect of sintering time on the structure, morphology, dielectric and electrical properties of CCTO ceramics is investigated. Tuning the electrical properties via different sintering times is demonstrated for ceramic samples. X-ray diffraction (XRD) studies confirm perovskite-like structure at room temperature. Abnormal grain growth is observed for cera

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12

Xiong, Zhao Xian, X. Xue, Hong Qiu, et al. "Microwave Dielectric Ceramics and Devices for Wireless Technologies." Key Engineering Materials 368-372 (February 2008): 154–58. http://dx.doi.org/10.4028/www.scientific.net/kem.368-372.154.

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In this paper, several kinds of synthesis techniques were adopted; not only conventional solidstate reaction method but also solution synthesis techniques, including co-precipitation and hydrothermal synthesis, in addition to the gel-casting for complex shape of ceramic components and tape-casting of large scale thin plate for microwave IC. Different kinds of microwave ceramics were prepared, such as materials with low permittivity and high quality factor, moderate permittivity and good quality factor, and, high permittivity and reasonable quality factor, in addition to near zero of temperatur

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13

Tsurumi, T., Y. Yamamoto, H. Kakemoto, S. Wada, H. Chazono, and H. Kishi. "Dielectric properties of BaTiO3–BaZrO3 ceramics under a high electric field." Journal of Materials Research 17, no. 4 (2002): 755–59. http://dx.doi.org/10.1557/jmr.2002.0110.

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Multilayered ceramic capacitors (MLCCs) with BaTiO3–BaZrO3 (BTZ) dielectric layers were fabricated, and the dielectric permittivity of the BTZ layers with different thicknesses in MLCCs was measured. The dielectric permittivity of the BTZ ceramic disk was also measured under various ac electric fields. The variation in the dielectric behaviors with the thickness of BTZ layers in MLCCs was explained by the ac-field dependence of dielectric permittivity observed in the BTZ ceramic disk. The ac-field dependence of dielectric permittivity of BTZ was markedly observed below the temperature of a bro

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14

Wang, Xu Ai, Run Hua Fan, Zhi Cheng Shi, et al. "Tunable Electromagnetic Properties of Yttrium Iron Garnet Ceramics." Materials Science Forum 816 (April 2015): 113–17. http://dx.doi.org/10.4028/www.scientific.net/msf.816.113.

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Different porosity Y3Fe5O12(YIG) ceramics (32% - 62%) were prepared from ceramic powders, which was synthesised by high temperature solid-phase reactions, and the effects of porosity on their electromagnetic properties were investigated. XRD and SEM were used to analyze the phase composition and microstructure of the porous composites. Electromagnetism properties including alternate current conductivity, permittivity and permeability of the composites were tested by HP4991 impedance analyzer (10 MHz~1 GHz). The results indicated that, the porosity and pore diameter were increasing with the add

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15

Chen, K., S. K. Yuan, P. L. Li, et al. "High permittivity in Zr doped NiO ceramics." Journal of Applied Physics 102, no. 3 (2007): 034103. http://dx.doi.org/10.1063/1.2764217.

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16

Shi, Yongjie, Wentao Hao, Hui Wu, et al. "High dielectric-permittivity properties of NaCu3Ti3Sb0.5Nb0.5O12 ceramics." Ceramics International 42, no. 1 (2016): 116–21. http://dx.doi.org/10.1016/j.ceramint.2015.08.009.

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17

Peng, Zhen, Hong Wang, and Xi Yao. "Dielectric resonator antennas using high permittivity ceramics." Ceramics International 30, no. 7 (2004): 1211–14. http://dx.doi.org/10.1016/j.ceramint.2003.12.079.

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18

Ahmad, Mohamad M., Adil Alshoaibi, Sajid Ali Ansari, Tarek S. Kayed, Hassan A. Khater, and Hicham Mahfoz Kotb. "Dielectric Properties of Bi2/3Cu3Ti4O12 Ceramics Prepared by Mechanical Ball Milling and Low Temperature Conventional Sintering." Materials 15, no. 9 (2022): 3173. http://dx.doi.org/10.3390/ma15093173.

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In the current study, Bi2/3Cu3Ti4O12 (BCTO) ceramics were prepared by mechanical ball mill of the elemental oxides followed by conventional sintering of the powder without any pre-sintering heat treatments. The sintering temperature was in the range 950–990 °C, which is 100–150 °C lower than the previous conventional sintering studies on BCTO ceramics. All the ceramic samples showed body-centered cubic phase and grain size ≈ 2–6 μm. Sintering temperature in the range 950–975 °C resulted in comparatively lower dielectric loss and lower thermal coefficient of permittivity in the temperature rang

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19

Chen, Xiuli, Xiaoxia Li, Guisheng Huang, Gaofeng Liu, Xiao Yan, and Huanfu Zhou. "Giant permittivity and good thermal stability of LiCuNb3O9-Bi(Mg0.5Zr0.5)O3 solid solutions." Journal of Advanced Dielectrics 08, no. 02 (2018): 1850012. http://dx.doi.org/10.1142/s2010135x18500121.

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([Formula: see text])LiCuNb3O9-[Formula: see text]Bi(Mg[Formula: see text]Zr[Formula: see text])O3 ceramics (([Formula: see text])LCN-[Formula: see text]BMZ) with [Formula: see text] were synthesized by a solid-state reaction method. The phase structure of ([Formula: see text])LCN-[Formula: see text]BMZ ceramics was characterized by X-ray diffraction (XRD), which revealed that the ceramics were distorted cubic perovskite structures. Apparent giant permittivity of [Formula: see text]–[Formula: see text] at 100[Formula: see text]kHz over the measured temperature range (25[Formula: see text]C–250

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20

Gorokhovsky, Alexander, Alexey Tsyganov, Vladimir Goffman, et al. "Synthesis and electrical properties of the ceramic materials based on KxMnyRzTi8–y–zO16 (R = Al, Cr, Fe) hollandite-like solid solutions." Journal of Advanced Materials and Technologies 9, no. 3 (2024): 160–66. https://doi.org/10.17277/jamt.2024.03.pp.160-166.

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The potassium polytitanates (PPT) modified in the aqueous solutions containing the mixtures of water soluble salts of Mn2+ and trivalent metals (R3+ = Fe3+, Cr3+ or Al3+) are used as intermediates to produce ceramic sinters consisting of hollandite-like solid solutions corresponding to the chemical composition of K1.3±0.1Mn1.5±0.1R0.2Ti6.3±0.1O16. It has been shown that an introduction of various trivalent metals into the salt compositions used to obtain Mn-containing powdered potassium polytitanate (PPT-Mn/R3+) makes it possible to produce single-phase ceramics based on the resulting products

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21

Ismail, Mukhlis M. "Ferroelectric characteristics of Fe/Nb co-doped BaTiO3." Modern Physics Letters B 33, no. 22 (2019): 1950261. http://dx.doi.org/10.1142/s0217984919502610.

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[Formula: see text] ceramics ([Formula: see text] mol.%, [Formula: see text]:[Formula: see text] = 1:3, 2:3, 3:2, 3:1) were successfully prepared using the traditional solid-phase sintering method. The effects of the proportion doping (Fe/Nb) components on various properties of BaTiO3 ceramics were studied. The X-ray diffraction showed that all solid solutions have the single cubic phase at room temperature, and that dielectric permittivity exhibits a maximum, Curie’s temperature at the peak. The ceramics have obvious peak shift effect: Curie’s temperature shifts to low temperature as Fe/Nb ra

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22

Khongrattana, Prachit, Marina Mani, Suwit Khongpakdee, Jakkree Boonlakhorn, and Pornjuk Srepusharawoot. "The influence of extrinsic structural factors on the dielectric properties of CaCu₃Ti_3.90Cr_0.10O₁₂ ceramics." Journal of Physics: Conference Series 2653, no. 1 (2023): 012049. http://dx.doi.org/10.1088/1742-6596/2653/1/012049.

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Abstract In this study, CaCu3Ti3.90Cr0.10O12 was produced via a solid-state reaction method. The phase formation and crystal structure analyses indicate a body-centered cubic structure with the space group Im3. There were no observed secondary phases. A microstructural study revealed that, with the sintering time fixed at 3 h, the average grain size increases as the sintering temperature was raised from 1090 °C to 1110 °C. Interestingly, the dielectric permittivity of CaCu3Ti3.90Cr0.10O12 ceramics increases from 3.53×104 to 8.04×104 as the sintering temperature was increased. In addition, the

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23

Zhang, Lulu, Bin Cui, Rong Ma, et al. "High permittivity of Ba(Ti1-xZrx)O3-based Y5V-type nanopowders and ceramics synthesized using a one-step sol–gel method." Journal of Advanced Dielectrics 03, no. 04 (2013): 1350018. http://dx.doi.org/10.1142/s2010135x13500185.

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We synthesized Ba ( Ti 1-x Zr x) O 3-based (BTZ) nanopowders modified with Cu and Nb , and sintered ceramics using a one-step sol–gel process. Characterization using TG-DTG, XRD, SEM, and TEM analysis methods revealed that the powders formed at a nanometer scale. The process was controlled by the composition and calcining temperature. BaZrO 3 formed earlier than BaTiO 3 during the calcining, then a Ba ( Ti 1-x Zr x) O 3 solid solution formed incompletely, resulting in ceramics with huge permittivity and good temperature stability. Moreover, the maximum dielectric constant (εmax) first increase

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24

Fan, Yongbo, Xinzhen Wang, Hongtian Li, et al. "Pb, Bi, and rare earth free X6R barium titanate–sodium niobate ceramics for high voltage capacitor applications." Applied Physics Letters 122, no. 14 (2023): 143901. http://dx.doi.org/10.1063/5.0142200.

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0.9Ba(Ti1−xMgx)O3−x-0.1NaNbO3 (BTNN-100xMg) solid solutions are investigated with a view to developing Bi, Pb, and rare earth free, high voltage multilayer ceramic capacitors. Mg doping on the B-site significantly reduced the electronic conductivity and resulted in ceramics that could withstand a pulsed unipolar field of >300 kV/cm (Emax) to give a recoverable energy density of 3.4 J/cm3 at 82.6% efficiency for x = 0.01. The high Emax is accompanied by a high dielectric permittivity (ε′ ∼ 1700 at room temperature) with temperature-stable dielectric permittivity of Δε/ε298K ≤ ±15% and loss t

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25

Synkiewicz-Musialska, Beata. "LTCC glass-ceramics based on diopside/cordierite/Al2O3 for ultra-high frequency applications." Scientiae Radices 2, no. 2 (2023): 190–201. http://dx.doi.org/10.58332/scirad2023v2i2a04.

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In this work, three glass-ceramic composites based on a commercial SiO2-B2O3-Al2O3-CaO-MgO glass and cordierite, diopside or Al2O3 were used for preparation of green tapes and low temperature cofired ceramics (LTCC) substrates. The thermal behavior, phase composition, microstructure and dielectric properties of the fabricated glass-ceramics were characterized using a heating microscope, thermal analysis, X-ray diffraction, scanning electron microscopy and time domain spectroscopy. The applicability of the developed materials for LTCC technology was demonstrated by the preparation of test multi

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26

Szwagierczak, Dorota. "Dielectric properties of high-permittivity A2/3CuTa4O12 ceramics." Microelectronics International 31, no. 3 (2014): 137–42. http://dx.doi.org/10.1108/mi-10-2013-0056.

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Purpose – This paper aims to present the comparative study on the composition, microstructure and dielectric behavior of a group of new nonferroelectric high-permittivity A2/3CuTa4O12 (A = Y, Nd, Sm, Gd, Dy or Bi) ceramics. Design/methodology/approach – The materials under investigation were synthesized by solid-state reaction method and sintered at 1,120-1,230°C. Dielectric properties were investigated in the temperature range from −55 to 740°C at frequencies 10 Hz to 2 MHz. Microstructure, elemental composition and phase composition of the ceramics were examined by scanning electron microsco

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27

Lin, Yuanhua, Rongjuan Zhao, Jianfei Wang, et al. "Polarization of High-Permittivity Dielectric NiO-Based Ceramics." Journal of the American Ceramic Society 88, no. 7 (2005): 1808–11. http://dx.doi.org/10.1111/j.1551-2916.2005.00361.x.

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28

Petzelt, Jan. "Dielectric Grain-Size Effect in High-Permittivity Ceramics." Ferroelectrics 400, no. 1 (2010): 117–34. http://dx.doi.org/10.1080/00150193.2010.505511.

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29

Lin, Yuanhua, Jianfei Wang, Lei Jiang, Yu Chen, and Ce-Wen Nan. "High permittivity Li and Al doped NiO ceramics." Applied Physics Letters 85, no. 23 (2004): 5664–66. http://dx.doi.org/10.1063/1.1827937.

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30

Huang, Cheng-Liang, Shin-Tung Tasi, and Yuan-Bin Chen. "Band-pass filters using high-permittivity ceramics substrate." Microwave and Optical Technology Letters 52, no. 10 (2010): 2344–47. http://dx.doi.org/10.1002/mop.25439.

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31

Li, Xuhai, Liang Xu, Lixin Liu, et al. "High pressure treated ZnO ceramics towards giant dielectric constants." J. Mater. Chem. A 2, no. 39 (2014): 16740–45. http://dx.doi.org/10.1039/c4ta03434a.

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32

Hoshina, Takuya, Mikio Yamazaki, Hiroaki Takeda, and Takaaki Tsurumi. "Dielectric Breakdown Mechanism of Perovskite-Structured Ceramics." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2015, CICMT (2015): 000116–20. http://dx.doi.org/10.4071/cicmt-tp43.

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We precisely measured the dielectric breakdown strength of SrTiO3, CaTiO3, and CaZrO3 ceramics as a function of temperature, and revealed the dielectric breakdown mechanism of the ceramics. For the dielectric breakdown test, ceramics specimens with a lot of round-bottom holes were prepared. Using the specimens, the breakdown positions were stabilized and a reliability of breakdown strength was improved as well as the measurement efficiency. As a result of the dielectric breakdown tests, it was found that the dielectric breakdown strength decreased with increasing permittivity at room temperatu

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33

Cheng, Xiao Fang, Xin Gui Tang, Shao Gong Ju, Yan Ping Jiang, and Qiu Xiang Liu. "Dielectric Properties and Diffuse Phase Transition of Sol-Gel Derived 0.94(Bi_0.5Na_0.5)TiO₃-0.06BaTiO₃ Ceramics." Advanced Materials Research 311-313 (August 2011): 1481–84. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.1481.

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The 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 (abbreviated to BNT-BT) powder and ceramic was synthesized by sol-gel process. The phase structure and dielectric properties of the ceramics were investigated. The ceramic was sintering at 1000-1100 degree C for 2-4 h in air atmosphere, and the X-ray diffraction (XRD) results revealed that the samples was pure perovskite-type phase. The Curite temperature of BNT-BT ceramics was high up to 348 degree C. The temperature dependence of dielectric permittivity and loss revealed there were two phase transitions, which were from ferroelectric (tetragonal) to anti-fer

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34

Kigoshi, Yoichi, Saki Hatta, Takashi Teranishi, et al. "Dielectric Properties of Barium Titanate Ceramics with Nano-Sized Domain." Key Engineering Materials 445 (July 2010): 27–30. http://dx.doi.org/10.4028/www.scientific.net/kem.445.27.

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Barium titanate (BaTiO3) ceramics with various grain sizes from 0.7 to 13 μm on average were prepared by a conventional sintering method, a two-step sintering method and a rate controlled two-step sintering method. The permittivity of the ceramics was increased with decreasing grain size to 1.1 μm on average. However, the permittivity of the ceramics was decreased when the grain size was below 1 μm. The field emission scanning electron microscope (FE-SEM) observations revealed that the 90º domain width decreased with decreasing the grain size. By ultrawide range dielectric spectra from kHz to

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35

Thomas, P., and K. B. R. Varma. "Effect of TeO2 addition on the dielectric properties of CaCu3Ti4O12 ceramics derived from the oxalate precursor route." Journal of Advanced Dielectrics 03, no. 04 (2013): 1350028. http://dx.doi.org/10.1142/s2010135x13500288.

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CaCu 3 Ti 4 O 12 (CCTO) ceramics which has perovskite structure gained considerable attention due to its giant permittivity. But it has high tan δ (0.1 at 1 kHz) at room temperature, which needs to be minimized to the level of practical applications. Hence, TeO 2 which is a good glass former has been deliberately added to CCTO nanoceramic (derived from the oxalate precursor route) to explore the possibility of reducing the dielectric loss while maintaining the high permittivity. The structural, morphological and dielectric properties of the pure CCTO and TeO 2 added ceramics were studied using

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36

Bochenek, Dariusz, Dagmara Brzezińska, Przemysław Niemiec, and Lucjan Kozielski. "The Influence of Lanthanum Admixture on Microstructure and Electrophysical Properties of Lead-Free Barium Iron Niobate Ceramics." Materials 17, no. 15 (2024): 3666. http://dx.doi.org/10.3390/ma17153666.

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This article presents the research results of lead-free Ba1−3/2xLax(Fe0.5Nb0.5)O3 (BFNxLa) ceramic materials doped with La (x = 0.00–0.06) obtained via the solid-state reaction method. The tests of the BFNxLa ceramic samples included structural (X-ray), morphological (SEM, EDS, EPMA), DC electrical conductivity, and dielectric measurements. For all BFNxLa ceramic samples, the X-ray tests revealed a perovskite-type cubic structure with the space group Pm3¯m. In the case of the samples with the highest amount of lanthanum, i.e., for x = 0.04 (BFN4La) and x = 0.06 (BFN6La), the X-ray analysis als

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37

Greicius, Simonas, Juras Banys, and Izabela Szafraniak-Wiza. "Dielectric investigations of BiFeO3 ceramics." Processing and Application of Ceramics 3, no. 1-2 (2009): 85–87. http://dx.doi.org/10.2298/pac0902085g.

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In this paper we present the results from the investigation of the dielectric permittivity of BiFeO3 ceramics, prepared by mechanochemical synthesis method in a broad frequency and temperature range. The dielectric permittivity is mainly caused by high conductivity, which is suppressed in the frequencies above 1 MHz. The investigated ceramics showed conductivity activation energy E/k = 11280?12 K, and ?0 = 54161?800 S. The plots of M*revealed conductivity mechanism with ?0 = 1.12?10-13s, and E/k = 9245 K. .

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Dumnui, Pariwat, Atittaya Changchuea, Marina Mani, Jakkree Boonlakhorn, and Pornjuk Srepusharawoot. "Structural and Electrical Characteristics of CaCu3-xFexTi4O12 Ceramics." ASEAN Journal of Scientific and Technological Reports 28, no. 2 (2025): e256400. https://doi.org/10.55164/ajstr.v28i2.256400.

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Fe3+ doped CaCu3Ti4O12 ceramics were successfully synthesized using a ball-milling oxide approach. Introducing Fe3+ doping resulted in a refined microstructure, significantly reducing the mean grain size of the CaCu3Ti4O12 ceramics. Dielectric property measurements were conducted at various temperatures. Increasing the Fe3+ content from 0 to 0.1 mol at room temperature led to a substantial decrease in dielectric permittivity, dropping from approximately 66246 to 435 at 10 kHz. This reduction in dielectric permittivity is closely associated with a substantial increase in grain resistance, which

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Albutt, Naphat, Suejit Pechprasarn, Pattaraporn Damkoengsuntorn, and Thanapong Sareein. "The Giant Dielectric Constant of Y₂NiMnO₆ Ceramics for DC Bias." Applied Mechanics and Materials 866 (June 2017): 277–81. http://dx.doi.org/10.4028/www.scientific.net/amm.866.277.

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In this work, the uses of giant dielectric constant of Y2NiMnO6 ceramics were investigated in the frequency range from 1 kHz to 3 MHz. The Y2NiMnO6 ceramics were sintered at 1400 °C for 6, 12, 18 and 24 hours, respectively. The dielectric properties of Y2NiMnO6 ceramics were examined in dc bias from 0 to 1.5 volt at room temperature. We found that all sintering times displayed high dielectric permittivity at frequencies below 105 Hz, above which the values decreased significantly, applied dc bias also reduced dielectric permittivity. The peak of dielectric loss decreased significantly at high

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Li, Yue Ming, Zong Yang Shen, Zhu Mei Wang, Hua Zhang, Yan Hong, and Run Hua Liao. "Structure and Microwave Dielectric Properties of (Ca_0.9375Sr_0.0625)_0.25 (Li_0.5Sm_0.5)_0.75TiO₃ Ceramics with B₂O₃-CuO Sintering Aids." Advanced Materials Research 284-286 (July 2011): 1442–46. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.1442.

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The B2O3-CuO oxide mixture (abbreviated as BC) was selected to lower the sintering temperature of (Ca0.9375Sr0.0625)0.25(Li0.5Sm0.5)0.75TiO3 (abbreviated as CSLST) microwave dielectric ceramics by solid sate reaction technique. The effects of BC doping amounts on the crystal structure, microstructure and microwave dielectric properties of the ceramics were investigated. For the ceramic sample with the composition of CSLST + 5 wt% BC, its sintering temperature was reduced to 1000 °C as compared to 1200 °C for pure CSLST. In addition to the obtained good microwave dielectric properties as follow

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Bochenek, Dariusz, Przemysław Niemiec, Radosław Zachariasz, and Ryszard Skulski. "Ferroelectric Properties and Internal Friction in Doped PZT Ceramics." Key Engineering Materials 644 (May 2015): 171–74. http://dx.doi.org/10.4028/www.scientific.net/kem.644.171.

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Multicomponent PZT-type solid solution with composition: Pb0.975Ba0.01Ca0.01Sr0.005 (Zr0.52Ti0.48)O3+1.4wt.%Bi2O3+0.3wt.%GeO obtained by hot uniaxial pressing method is described in this paper. There are presented the results of studies of structural, dielectric and internal friction of obtained multicomponent PZT-type ceramics. It has been stated that the dielectric anomalies and internal friction anomalies are observed in similar temperature ranges. Obtained PZT-type ceramics have high value of the dielectric permittivity and low dielectric losses. The high temperature of phase transition an

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Peng, Zhanhui, Jitong Wang, Fudong Zhang, et al. "High energy storage and colossal permittivity CdCu3Ti4O12 oxide ceramics." Ceramics International 48, no. 3 (2022): 4255–60. http://dx.doi.org/10.1016/j.ceramint.2021.10.217.

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Petzelt, J., and I. Rychetský. "Effective Dielectric Function in High-Permittivity Ceramics and Films." Ferroelectrics 316, no. 1 (2005): 89–95. http://dx.doi.org/10.1080/00150190590963183.

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Bhaskar Reddy, S., M. S. Ramachandra Rao, and K. Prasad Rao. "Observation of high permittivity in Ho substituted BaZr0.1Ti0.9O3 ceramics." Applied Physics Letters 91, no. 2 (2007): 022917. http://dx.doi.org/10.1063/1.2755932.

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Huang, Cheng-Liang, Pau-Yeou Yen, and Min-Hung Weng. "Planar SIR microwave bandpass filter using high-permittivity ceramics." Microwave and Optical Technology Letters 26, no. 6 (2000): 410–13. http://dx.doi.org/10.1002/1098-2760(20000920)26:6<410::aid-mop19>3.0.co;2-y.

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Dong, Ying, Hiroshi Kubo, Mitsuo Hano, and Ikuo Awai. "A waveguide bandpass filter made of high-permittivity ceramics." Electronics and Communications in Japan (Part II: Electronics) 77, no. 1 (1994): 46–56. http://dx.doi.org/10.1002/ecjb.4420770105.

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ZHOU, DI, HONG WANG, QIU-PING WANG, et al. "MICROWAVE DIELECTRIC PROPERTIES AND RAMAN SPECTROSCOPY OF SCHEELITE SOLID SOLUTION [(Li0.5Bi0.5)1-xCax]MoO4 CERAMICS WITH ULTRA-LOW SINTERING TEMPERATURES." Functional Materials Letters 03, no. 04 (2010): 253–57. http://dx.doi.org/10.1142/s1793604710001354.

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A Scheelite solid solution was formed based on [( Li0.5Bi0.5 )1-x Ca x] MoO 4 ceramics and prepared via a solid state reaction method in the range 0.0 ≤ x ≤ 1.0. High performance microwave dielectric properties were obtained in the [(Li0.5Bi0.5)0.15Ca0.85]MoO4 ceramic sintered at 760°C with a relative permittivity of 14.1, a Qf value of 24,000 GHz (at 10.0 GHz), and a temperature coefficient value of +10.7 ppm/°C and the [(Li0.5Bi0.5)0.1Ca0.9]MoO4 ceramic sintered at 850°C with a relative permittivity of 12.7, a Qf value of 41,300 GHz (at 10.3 GHz), and a temperature coefficient value of -16.5

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Karpov, A. V., A. E. Sytschev, O. D. Boyarchenko, I. D. Kovalev, O. V. Belousova, and V. E. Loryan. "DIELECTRIC PROPERTIES OF CERAMICS BASED ON BN–ZrB2 AND BN–ZrO2 PRODUCED BY SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS." Steklo i Keramika, no. 11 (November 2022): 30–36. http://dx.doi.org/10.14489/glc.2022.11.pp.030-036.

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Dielectric properties of ceramic materials based on BN–ZrB2 and BN–ZrO2 systems synthesized in the mode of self-propagating high-temperature synthesis (SHS) from a mixture of boron B powders, boron nitride BN and zirconium dioxide ZrO2 in an atmosphere of nitrogen N2 have been studied. The experimental results showed that ceramics synthesized from the initial mixture of (30B + 10ZrO2 + 60BN, wt. %) composition have permittivity (?) and tangent of the dielectric loss angle (tg) values of 2.63 and 0.006, respectively, at room temperature.

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Wang, Bo, Le Zhao, Xiuhuai Jia, Pan Yang, and Shihui Yu. "Enhanced Tunability Achieving at Low Permittivity and Electric Field in (Ba0.91Ca0.09)(SnxZr0.2−xTi0.8)O3-2 mol% CuO-1 mol% Li2CO3 Ceramics." Materials 16, no. 15 (2023): 5226. http://dx.doi.org/10.3390/ma16155226.

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Ferroelectric varactors should have high tunability at low permittivity and a working electric field to obtain better impedance matching and stable tunability. In this work, (Ba0.91Ca0.09)(SnxZr0.2−xTi0.8)O3-2 mol% CuO-1 mol% Li2CO3 (abbreviated as BCSZT100x, x = 0.05, 0.10, 0.15 and 0.20, respectively) are prepared to achieve high tunability at low permittivity and a working electric field. The tunable mechanisms are investigated based on crystal structure, micro-morphology and the permittivity-temperature spectrum. The results show that the shrink of oxygen octahedron and weaker interaction

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JIANG, Y. P., X. G. TANG, Y. C. ZHOU, and Q. X. LIU. "Pb-DOPING EFFECTS ON THE DIELECTRIC AND PYROELECTRIC PROPERTIES OF (Sr,Pb)TiO3 SYSTEM." Journal of Advanced Dielectrics 02, no. 01 (2012): 1250005. http://dx.doi.org/10.1142/s2010135x12500051.

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Lead strontium titanate ( Sr 1-x Pb x) TiO 3 (0.20 ≤ x ≤ 0.45,step = 0.05) ceramics were prepared by conventional mixed oxide method. The X-ray diffraction patterns indicate that the prepared samples have perovskite-type structure. With the increase of Pb content, there is a tendency from the cubic to tetragonal structure. The scanning electron microscopy micrographs reveal that the addition of Pb can affect microstructure. The dependent temperature dielectric permittivity and dielectric loss were investigated in the frequency range from 100 Hz to 1 MHz. The maximum peak of the dielectric perm

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