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Journal articles on the topic 'Polarization and Ceramics'

Author: Grafiati
Published: 4 June 2025
Last updated: 1 August 2025

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1

Zhang, You Feng, Qing Chang Meng, De Chang Jia, and Yu Zhou. "Effects of Polarization Treatment on Mechanical Properties of Al2O3/LiTaO3 Composite Ceramics." Key Engineering Materials 353-358 (September 2007): 1314–17. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.1314.

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The Al2O3/LiTaO3 (ALT) composite ceramics were fabricated by hot pressing method and polarization treated at different temperatures along height and width directions. Effects of polarization treatment on mechanical properties of the ALT composite ceramic were investigated. Flexural strength decreased with the increase of polarization temperature. Meanwhile, the flexural strength of samples polarized in height direction is higher than that polarized in width direction. The composite ceramic fractures intragranularly, and many rupture steps in polarization direction were observed on fractographs
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2

Ri, Chol-Nam, Jong-Su Ri, and Kwang-Ho Ju. "Influence of Sb2O3 doping on the sintering and polarization characteristics of PbTiO3 ceramic materials." Functional Materials Letters 14, no. 02 (2021): 2150007. http://dx.doi.org/10.1142/s1793604721500077.

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In this paper, the effect of Sb2O3 doping on the sintering and polarization stability of PbTiO3 ceramics was investigated. The Sb2O3-doped PbTiO3 ceramic materials were prepared viaa conventional piezoelectric ceramic processing. The results showed that the as-prepared PbTiO3 ceramics exhibit a good sintering stability without cracking during sintering because of reducing spontaneous strain stemmed from decrease the tetragonal degree of PbTiO3 by Sb2O3 doping. Furthermore, the polarization stability of Sb2O3-doped PbTiO3 ceramics was considerably enhanced by the relaxation of strain and stress
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3

Li, Bei, X. B. Liu, M. Chen, and X. A. Mei. "Ferroelectric Properties of Bismuth Titanate Ceramics by Tm2O3/V2O5 Substitution." Key Engineering Materials 633 (November 2014): 374–77. http://dx.doi.org/10.4028/www.scientific.net/kem.633.374.

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The ferroelectricity of Bi3.25Tm0.75Ti2.97V0.03O12 (BTTV) ceramic prepared at 1200°C by a conventional ceramic technique was investigated. The ceramic possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BTTV ceramics are 25 μC/cm2 and 70kV/cm, respectively. The Pr value of the BTTV ceramics up to 25 μC/cm2 is larger than that of the BTT ceramics. Therefore, co-sustitution of Tm and V in Bi4Ti3O12 (BIT) ceramics is effective for the improvement of the ferroelectricity of Bi4Ti3O12 ceramics.
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4

Liu, Rui Fang, X. A. Mei, M. Chen, C. Q. Huang, and J. Liu. "Ferroelectric Properties of Bismuth Titanate Ceramics by Tb2O3/V2O5 Substitution." Key Engineering Materials 633 (November 2014): 386–89. http://dx.doi.org/10.4028/www.scientific.net/kem.633.386.

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The ferroelectricity of Bi3.2Tb0.8Ti3O12 (BTT) and Bi3.2Tb0.8Ti2.97V0.03O12 (BTTV) ceramics prepared at 1100°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BTT ceramics are 16 μC/cm2 and 75kV/cm, respectively. Furthermore, V substitution improves the Pr value of the BTT ceramics up to 26 μC/cm2, which is much larger than that of the BTT ceramics. Therefore, co-sustitution of Tb and V in Bi4Ti3O12 (BIT) ceramic is effective for the improvement of its ferroelec
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5

Huang, Chong Qing, Min Chen, X. A. Mei, Y. H. Sun, and J. Liu. "Ferroelectric Properties of Bismuth Titanate Ceramics by Dy3+/V5+ Substitution." Advanced Materials Research 412 (November 2011): 306–9. http://dx.doi.org/10.4028/www.scientific.net/amr.412.306.

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The ferroelectricity of Bi3.25Dy0.75Ti3O12(BDT), and Bi3.25Dy0.75Ti2.97V0.03O12(BDTV) ceramics prepared at 1100°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BDT ceramics are 15 µC/cm2and 64kV/cm, respectively. Furthermore, V substitution improves the Prvalue of the BDT ceramics up to 23 μC/cm2, which is much larger than that of the BDT ceramics. Therefore, co-sustitution of D and V in Bi4Ti3O12(BIT) ceramic is effective for the improvement of its ferroelect
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6

Mei, X. A., Rui Fang Liu, C. Q. Huang, and J. Liu. "Ferroelectric Properties of Bismuth Titanate Ceramics by Tb3+,4+/V5+ Substitution." Advanced Materials Research 624 (December 2012): 150–53. http://dx.doi.org/10.4028/www.scientific.net/amr.624.150.

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The Ferroelectric properties and Microstructures of Bi3.3Tb0.6Ti3O12 (BTT) and Bi3.3Tb0.6Ti2.97V0.03O12 (BTTV) ceramics prepared at 1100°C by a conventional ceramic technique were investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BTT ceramics are 23µC/cm2 and 80kV/cm, respectively. Furthermore, V substitution improves the Pr value of the BTTV ceramics up to 35μC/cm2, which is larger than that of the BTT ceramics. Therefore, co-sustitution of Tb and V in Bi4Ti3O12 (BIT) ceramic is effective for the impro
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7

Liu, Rui Fang, M. B. Sun, W. P. Ding, and X. A. Mei. "Ferroelectric Properties of Bismuth Titanate Ceramics by Er3+/V5+ Substitution." Advanced Materials Research 624 (December 2012): 158–61. http://dx.doi.org/10.4028/www.scientific.net/amr.624.158.

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The ferroelectricity of Bi3.2Er0.8Ti3O12 (BET), and Bi3.2Er0.8Ti2.97V0.03O12 (BETV) ceramics prepared at 1100°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BET ceramics are 18 µC/cm2 and 64kV/cm, respectively. Furthermore, V substitution improves the Pr value of the BETV ceramics up to 30 μC/cm2, which is much larger than that of the BET ceramics. Therefore, co-sustitution of Er and V in Bi4Ti3O12 (BIT) ceramic is effective for the improvement of its ferroel
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8

Chen, Min, X. A. Mei, Rui Fang Liu, C. Q. Huang, and J. Liu. "Impedance Spectra and Ferroelectric Properties of Bismuth Titanate Ceramics by Nd3+/V5+ Substitution." Advanced Materials Research 624 (December 2012): 174–77. http://dx.doi.org/10.4028/www.scientific.net/amr.624.174.

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The ferroelectricity of Bi3.25Nd0.75Ti3O12 (BNT), and Bi3.25Nd0.75Ti2.97V0.03O12 (BNTV) ceramics prepared at 1100°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BNT ceramics are 16 µC/cm2 and 65kV/cm, respectively. Furthermore, V substitution improves the Pr value of the BNTV ceramics up to 23 μC/cm2, which is much larger than that of the BNT ceramics. Therefore, co-sustitution of Nd and V in Bi4Ti3O12 ceramic is effective for the improvement of its ferroelec
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9

Mei, X. A., M. Chen, R. F. Liu, Y. H. Sun, and J. Liu. "Ferroelectric Properties of Bismuth Titanate Ceramics by Eu3+/V5+ Substitution." Key Engineering Materials 492 (September 2011): 230–33. http://dx.doi.org/10.4028/www.scientific.net/kem.492.230.

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The ferroelectricity of Bi3.25Eu0.75Ti3O12(BET), and Bi3.25Eu0.75Ti2.97V0.03O12(BETV) ceramics prepared at 1100°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BET ceramics are 16 µC/cm2and 62kV/cm, respectively. Furthermore, V substitution improves the Prvalue of the BET ceramics up to 25 μC/cm2which is larger than that of the BET ceramics. Therefore, co-sustitution of Eu and V in Bi4Ti3O12 (BIT) ceramic is effective for the improvement of its ferroelectricit
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10

Huang, Chong Qing, Min Chen, R. F. Liu, X. A. Mei, and J. Liu. "Ferroelectric Properties of Bismuth Titanate Ceramics by Sm3+/V5+ Substitution." Key Engineering Materials 512-515 (June 2012): 1333–36. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.1333.

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The ferroelectricity of Bi3.25Sm0.75Ti3O12 (BST), and Bi3.25Sm0.75Ti2.97V0.03O12 (BSTV) ceramics prepared at 1100°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BST ceramics are 16 µC/cm2 and 64kV/cm, respectively. Furthermore, V substitution improves the Pr value of the BST ceramics up to 25 μC/cm2, which is much larger than that of the BST ceramics. Therefore, co-sustitution of Sm and V in is effective for the improvement of the ferroelectricity of Bi4Ti3O1
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11

Liu, X. B., X. A. Mei, M. Chen, and B. Li. "Effect of Sc2O3/V2O5 Substitution on the Ferroelectric Properties of Bi4Ti3O12 Ceramics." Key Engineering Materials 633 (November 2014): 394–97. http://dx.doi.org/10.4028/www.scientific.net/kem.633.394.

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The ferroelectricity of Bi3.25Sc0.75Ti3O12 (BST), and Bi3.25Sc0.75Ti2.97V0.03O12 (BSTV) ceramics prepared at 1100°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BST ceramics are 18 μC/cm2 and 70kV/cm, respectively. Furthermore, V substitution improves the Pr value of the BST ceramics up to 26 μC/cm2. Therefore, co-sustitution of Sc and V in Bi4Ti3O12 (BIT) ceramic is effective for the improvement of its ferroelectricity.
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12

Wongmaneerung, Rewadee, Athipong Ngamjarurojana, Rattikorn Yimnirun, and Supon Ananta. "Thermal Expansion and Polarization Behavior in Lead Titanate/Zinc Oxide Nanocomposite Ceramics." Key Engineering Materials 547 (April 2013): 107–13. http://dx.doi.org/10.4028/www.scientific.net/kem.547.107.

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Nanosized zinc oxide/lead titanate (ZnO/PT) ceramic matrix nanocomposites have been studied. Under an appropriate sintering condition, ZnO/PT ceramic nanocomposites were successfully fabricated by a pressureless sintering technique. Thermal expansion and polatization behaviors were determined by using the dilatometer. This technique measures the temperature-dependent of the strain, and the magnitude of polarization can be deduced from the sets of the thermal expansion data. The calculated electric polarization values on the ZnO/PT nanocomposite ceramics show the simple approach to determine th
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13

Liu, X. B., X. A. Mei, M. Chen, and B. Li. "The Effect of La Substitution on the Ferroelectric Properties of Bi4Ti3O12 Ceramics." Key Engineering Materials 633 (November 2014): 390–93. http://dx.doi.org/10.4028/www.scientific.net/kem.633.390.

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The effect of La substitution on the ferroelectric properties Bi4Ti3O12 ceramics prepared by a conventional electroceramic technique has been investigated. XRD analyses revealed Bi-layered perovskite structure in all Bi4-xLaxTi3O12 (BLT) ceramics samples, and indicted that Bi ions were only substituted near the Ti-O octahedron layers by La ions. SEM micrographs show randomly oriented and plate-like morphology. The remanent polarization ( Pr ) and coercive field ( Ec ) of the BLT ceramic with x=0.8 were above 15μC/cm2 and 85KV/cm, respectively. The large value of remanent polarization and low c
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14

Horiuchi, Naohiro, Yu Tsuchiya, Kosuke Nozaki, Miho Nakamura, Akiko Nagai, and Kimihiro Yamashita. "Thermally Stimulated Depolarization Current in 3 Mol% Yttria-Doped Zirconia." Key Engineering Materials 582 (September 2013): 135–38. http://dx.doi.org/10.4028/www.scientific.net/kem.582.135.

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3 mol% yttria-stabilized zirconia (YSZ) powders were sintered into pellets. The YSZ ceramics were electrically polarized by applying dc voltage at an elevated temperature. After cooling the samples to room temperature, the polarized YSZ ceramics were heated at a constant heating rate. The formed polarizations were relaxed with increase of the increase temperature. The depolarization current was measured as thermally stimulated depolarization current (TSDC). Each of the TSDC spectra had two peaks located at lower and higher temperatures. The lower and higher peaks are attributed to dipole polar
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15

Chen, M., Zu Li Liu, and Kai Lun Yao. "Ferroelectric Properties of Bismuth Titanate Ceramics by Sm3+/V5+ Substitution." Key Engineering Materials 280-283 (February 2007): 167–70. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.167.

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The ferroelectricity of Bi3.2Sm0.8Ti3O12 (BST) and Bi3.2Sm0.8Ti2.97V0.03O12 (BSTV)ceramics prepared at 1100oC by a conventional ceramic technique is investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BST ceramics are 16 µC/cm2 and 62kV/cm, respectively. Furthermore, V5+ substitution improves the Pr value of the BST ceramics up to 25µC/cm2, which is larger than that of the BST ceramics. Therefore, the co-substitution of Sm3+ and V5+ in Bi4Ti3O12 (BIT) ceramics is effective for the improvement of its ferro
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16

Tian, Fang, X. A. Mei, M. Chen, and C. Q. Huang. "Ferroelectric Properties of Bismuth Titanate Ceramics by Pm3+/V5+ Substitution." Key Engineering Materials 591 (November 2013): 228–31. http://dx.doi.org/10.4028/www.scientific.net/kem.591.228.

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The ferroelectricity of Bi3.25Pm0.75Ti3O12 (BPT), and Bi3.25Pm0.75Ti2.97V0.03O12 (BPTV) ceramics prepared at 1200°C by a conventional ceramic technique was investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BPT ceramic are 16 μC/cm2 and 62kV/cm, respectively. Furthermore, V substitution improves the Pr value of the BPT ceramic up to 25 μC/cm2 which is larger than that of the BPT ceramic. Therefore, co-sustitution of Pm and V in Bi4Ti3O12 (BIT) ceramic is effective for the improvement of its ferroelectric
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17

Hao, Hang Fei, Guo Qiang Tan, Peng Xiong, Bo Qin, and Hui Jun Ren. "Study on the Pressureless Sintering and Properties of (K0.5Na0.5)1-xLixNb1-yTayO3 Lead-Free Piezoelectric Ceramics." Key Engineering Materials 512-515 (June 2012): 1403–7. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.1403.

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Potassium sodium niobate ((K0.5Na0.5)1-xLixNb1-yTayO3) powers were prepared by solid phase synthesis and (K0.5Na0.5)1-xNb1-yTayO3 lead-free piezoelectric ceramics were fabricated by the pressuerless sintering. The relationship among the powder phase composition and electric properties was studied. The results show that when x=0.5, the sintering temperature is 1050°C,and the polarization voltage is 3 kV/mm, the (K0.5Na0.5)1-xLixNb1-yTayO3 piezoelectric ceramics with the better piezoelectric properties are prepared. (The relative density is 94%, the piezoelectric constant d33=105pC/N, the planar
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18

Malyshkina O.V., Ali M., Ivanova A.I., Chernyshova I.A., and Mamaev D.V. "Features of polarization of piezoelectric ceramics based on sodium niobate." Physics of the Solid State 63, no. 13 (2022): 1752. http://dx.doi.org/10.21883/pss.2022.13.52317.159.

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Comparative studies of the pyroelectric properties and structural features of sodium niobate and sodium-potassium niobate ceramics obtained under different technological conditions for the synthesis of sodium niobate have been carried out. X-ray phase analysis revealed the existence of an additional phase with the chemical formula NaNb10O18 in sodium niobate ceramic samples that do not exhibit ferroelectric properties. It is shown that the temperature conditions for the synthesis of the sodium niobate material determine the nature of the macroscopic polarization of the samples of both pure sod
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19

Malyshkina O.V., Ali M., Ivanova A.I., Chernyshova I.A., and Mamaev D.V. "Features of polarization of piezoelectric ceramics based on sodium niobate." Physics of the Solid State 63, no. 13 (2022): 2185. http://dx.doi.org/10.21883/pss.2022.13.53977.159.

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Comparative studies of the pyroelectric properties and structural features of sodium niobate and sodium-potassium niobate ceramics obtained under different technological conditions for the synthesis of sodium niobate have been carried out. X-ray phase analysis revealed the existence of an additional phase with the chemical formula NaNb10O18 in sodium niobate ceramic samples that do not exhibit ferroelectric properties. It is shown that the temperature conditions for the synthesis of the sodium niobate material determine the nature of the macroscopic polarization of the samples of both pure sod
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20

Choi, Youn Kyu, Takuya Hoshina, Hiroaki Takeda, Jong Min Oh, and Takaaki Tsurumi. "The Effect of Oxygen Vacancies on the Dielectric Responses of BaTiO3 Based Ceramics in the Ultra-Wide Frequency Range." Key Engineering Materials 485 (July 2011): 15–18. http://dx.doi.org/10.4028/www.scientific.net/kem.485.15.

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The effect of oxygen vacancies and their migrations on the dielectric responses of BaTiO3 (BT) ceramics and (Ba, Ca)(Ti, Zr)O3 (BCTZ) ceramics was studied using wideband dielectric spectroscopy. Both dipole and ionic polarization of BT ceramics after annealing in a reducing atmosphere markedly decreased. To elucidate the decrease of dipole and ionic polarization, we observed the domain width and the crystal structure of BT ceramics annealed in different PO2. The mass fractions of constituted phases in 90o domain were calculated using the refinement of XRD patterns to explain the degradation of
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21

Huang, Chong Qing, Min Chen, X. A. Mei, Y. H. Sun, and J. Liu. "Ferroelectric Properties and Microstructures of La2O3-Doped Bi4Ti3O12 Ceramics." Advanced Materials Research 412 (November 2011): 302–5. http://dx.doi.org/10.4028/www.scientific.net/amr.412.302.

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The electrical properties of La-doped bismuth titanate, Bi4-xLaxTi3O12(BLT) ceramics prepared by a conventional electroceramic technique have been investigated. XRD analyses revealed Bi-layered perovskite structure in all samples, and indicted that Bi ions were only substituted near the Ti-O octahedron layers by La ions. SEM micrographs show randomly oriented and plate-like morphology. The remanent polarization ( Pr) and coercive field ( Ec) of the BLT ceramic with x=0.75 were above 19μC/cm2and 60KV/cm, respectively. The large value of remanent polarization and low coercive field of La-doped b
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22

Liu, J., M. Chen, X. A. Mei, Y. H. Sun, and Chong Qing Huang. "Ferroelectric Properties and Microstructures of Dy2O3-Doped Bi4Ti3O12 Ceramics." Key Engineering Materials 492 (September 2011): 226–29. http://dx.doi.org/10.4028/www.scientific.net/kem.492.226.

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The electrical properties of Dy-doped bismuth titanate, Bi4-xDyxTi3O12(BDT) ceramics prepared by a conventional electroceramic technique have been investigated. XRD analyses revealed Bi-layered perovskite structure in all samples, and indicted that Bi ions were only substituted near the Ti-O octahedron layers by Dy ions. SEM micrographs show randomly oriented and plate-like morphology. The remanent polarization (Pr) and coercive field (Ec) of the BDT ceramic with x = 0.75 were above 19μC/cm2and 50KV/cm, respectively. The large value of remanent polarization and low coercive field of Dy-doped b
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23

Kobayashi, Takayuki, Satoshi Nakamura, and Kimihiro Yamashita. "Optimum Conditions for Superosteoconductivity of Polarized Hydroxyapatite Ceramics." Key Engineering Materials 309-311 (May 2006): 157–62. http://dx.doi.org/10.4028/www.scientific.net/kem.309-311.157.

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Surface charges of biomaterials are recognized as one of the important factors to determine cell and tissue responses. The HA ceramics polarized at various temperatures were estimated by implantation tests. The HA ceramic samples with the polarization treatment at temperature ranging from 250 to 500°C were implanted into bones. These phenomena were observed regard less the polarization temperature. It was obvious that the negatively chargedsurfaces acquired the excellent osteoconductivity at the polarization temperature from 250 to 500°C. The similarity of the tissue reactions implied that the
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24

Liu, Rui Fang, X. A. Mei, M. Chen, C. Q. Huang, and J. Liu. "Ferroelectric Characteristics of Bi4-xPrxTi3O12 Ceramics." Key Engineering Materials 633 (November 2014): 382–85. http://dx.doi.org/10.4028/www.scientific.net/kem.633.382.

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The electrical properties of Pr2O3-doped bismuth titanate,Bi4-xPrxTi3O12 (BPT) ceramics prepared by a conventional electroceramic technique were investigated. XRD analyses revealed Bi-layered perovskite structure in all ceramics. SEM micrographs showed randomly oriented and plate-like morphology. For the ceramics with x=0.25 and 1.0 P-E hysteresis loops were characterized by large leakage current, whereas for the ceramics with x=0.5 and 0.75 P-E hysteresis loops were the saturated and undistorted hysteresis loops. The remanent polarization ( Pr ) and coercive field (Ec) of the BPT ceramic with
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25

Peng, Ling, Min Hong Jiang, Zheng Fei Gu, and Gang Cheng. "Effect of Sintering Temperature on the Structure and Piezoelectric Properties of Lead-Free 0.97K0.5Na0.5NbO3-0.03AlFeO3 Ceramics." Key Engineering Materials 602-603 (March 2014): 822–25. http://dx.doi.org/10.4028/www.scientific.net/kem.602-603.822.

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Lead-free piezoelectric 0.97 K0.5Na0.5NbO3-0.03 AlFeO3(KNN-AF) ceramics were prepared at low temperature of 980 °C to 1020 °C by the conventional ceramic process. The effect of sintering temperature on the crystal structure, density and electrical properties of the ceramics was investigated. The results indicate that KNN-AF ceramics sintered at an low temperature of 1000 °C exhibit high electrical and piezoelectric properties, with piezoelectric constantd33=116ρC/N, and electromechanical coupling factorkp= 32.9%, polarization (Pr) wasPr=21.8 μC/cm2and curie temperatureTC=382°C. This also indic
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26

Deshpande, V. K., and V. U. Rahangdale. "Study of PbTiO3-Based Glass Ceramics Containing SiO2." ISRN Ceramics 2012 (November 4, 2012): 1–5. http://dx.doi.org/10.5402/2012/823903.

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Glass samples with composition 50PbO : 25TiO2 : (25-X) B2O3 : XSiO2 (with X = 0, 1.5, 2.5, 3.5, and 5 mol%) were prepared by conventional quenching technique. These glass samples were converted to glass ceramics by the two-stage heat treatment schedule. Formation of ferroelectric lead titanate phase in the glass ceramics was confirmed from the XRD. The density, CTE, and dielectric constant of the glass and glass-ceramic samples were measured. The glass-ceramic sample containing 2.5 mol% SiO2 exhibited the highest dielectric constant. The SEMs of glass-ceramic samples were studied. The P-E hyst
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27

Dai, Zhonghua, and Yukikuni Akishige. "Ferroelectric properties in Mn-modified BiFeO3–BaTiO3 ceramics." Functional Materials Letters 07, no. 01 (2014): 1350074. http://dx.doi.org/10.1142/s1793604713500744.

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Multiferroic 0.4 mol%- MnO 2-doped 0.78 BiFeO 3–0.22 BaTiO 3 ceramics were prepared by a traditional ceramic process. The effects of doping and annealing on the dielectric and ferroelectric properties were intensively investigated. Dielectric dispersion like relaxor ferroelectrics was observed in the oxygen annealed sample, but disappeared in the vacuum annealed sample. Modification of the BiFeO 3– BaTiO 3 with MnO 2 and annealing in vacuum improved DC resistivity obviously. The spontaneous polarization, remnant polarization, and coercive field are 65.2 μC/cm2, 59.5 μC/cm2 and 21.9 kV/cm, resp
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28

CHEN, QIAN, ZHIJUN XU, RUIQING CHU, and YONG LIU. "DIELECTRIC AND FERROELECTRIC PROPERTIES OF (Li, Ce)-DOPED Sr2Bi4Ti5O18 LEAD-FREE CERAMICS." Journal of Advanced Dielectrics 01, no. 04 (2011): 439–45. http://dx.doi.org/10.1142/s2010135x11000586.

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The influence of (Li, Ce) doping on the electrical properties of bismuth layer Sr 2-x (Li, Ce) x/2 Bi4Ti5O18 [abbreviated to SBTi-(Li, Ce) X/2] ceramics was investigated. X-ray diffraction analysis showed that all the ceramic samples were single-phase compounds. The (Li, Ce) modification significantly decreased the dielectric loss of Sr2Bi4Ti5O18 ceramics and greatly improved the piezoelectric activity. At x/2 = 0.0125, the SBTi-(Li, Ce) x/2 ceramics exhibited the excellent properties with high remnant polarization (P r = 9.3 μC/cm2) and high Curie temperature (T c = 299°C). Meanwhile, the SBT
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29

Dinh Tung Luan, Nguyen, Le Dai Vuong, Truong Van Chuong, and Nguyen Truong Tho. "Structure and Physical Properties of PZT-PMnN-PSN Ceramics Near the Morphological Phase Boundary." Advances in Materials Science and Engineering 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/821404.

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The 0.9Pb(ZrxTi1−x)O3-0.07Pb(Mn1/3Nb2/3)O3-0.03Pb(Sb1/2Nb1/2)O3(PZT-PMnN-PSN) ceramics were prepared by columbite method. The phase structure of the ceramic samples was analyzed. Results show that the pure perovskite phase is in all ceramics specimens. The effect of the Zr/Ti ratio on the region of morphotropic phase boundary for PZT-PMnN-PSN ceramics was studied. Experimental results show that the phase structure of ceramics changes from tetragonal to rhombohedral with the increase of the content of Zr/Ti ratio in the system. The composition of PZT-PMnN-PSN ceramics near the morphotropic phas
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30

Zubtsov, V. I. "Technology to Increase Energy Density of Electric Car Batteries." International Journal of Electrical Engineering and Computer Science 4 (September 2, 2022): 40–44. http://dx.doi.org/10.37394/232027.2022.4.6.

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The article deals with a small-sized unit developed using ferro-piezoelectric ceramics for electric power generation. The use of an electrochemical generator in the unit makes it possible to increase the efficiency of electricity generation by controlling the polarization of ferro-piezoelectric ceramics. At the consumption of 1 joule of electricity, using mechanical energy, 3, 5...5 joules of output electrical energy are generated. The increase in the energy density of the batteries occurs in two stages: the first stage is to increase the degree of polarization of the segmentelectric, the seco
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Liu, Nan, Zhenming Liu, Xinrui Gong, Xinyuan Huang, and Chunyou Xiong. "Study on Temperature Characteristics of Ceramic Materials for Piezoelectric Actuators and Model Modification." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 37, no. 5 (2019): 1011–17. http://dx.doi.org/10.1051/jnwpu/20193751011.

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The performance of piezoelectric actuator ceramics under strong electric field(20 kV/cm) and variable temperature (30~150℃) were tested on a piezoelectric ceramic thermo-electro-mechanical multi-field loading test bench. The variation of hysteresis loop, strain loop, free capacitor and dielectric loss tangent with temperature was analyzed. A mathematical model of displacement characteristics of ceramic materials considering temperature effect is established, and the accuracy of the model is verified. The results show that the hysteresis loops become slender with the increasing of temperature,
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32

Wu, Yun Yi, Lei Wang, Zhi Qiang Hua, and Tao Li. "Microstructure and Electrical Properties of Vanadium doped Bi4Ti3O12 Layer-Stuctured Ferroelectric Ceramics." Advanced Materials Research 548 (July 2012): 333–40. http://dx.doi.org/10.4028/www.scientific.net/amr.548.333.

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A series of ferroelectric BIT ceramics with various V2O5dopants were prepared by conventional solid-state route. The influence of V2O5 dopant on microstructural and electrical properties of BIT ceramic were investigated in detail, which were examined by XRD, Raman spectra and P-E hysteresis loops, etc. X-ray Photoelectron Spectroscopy was used to examine the chemical state of the vanadium ions inside the BIT ceramics. Vanadium added to the BIT system can enhance the ferroelectric property due to the decrease of the concentration of space charge occurred during calcinations and weaken the polar
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33

Pan, Tianze, Ji Zhang, Dongxiao Che, et al. "Improved capacitive energy storage in sodium niobate-based relaxor antiferroelectric ceramics." Applied Physics Letters 122, no. 7 (2023): 072902. http://dx.doi.org/10.1063/5.0134282.

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Ceramic-based dielectric capacitors have become an attractive issue due to their wide applications in current pulsed-/high-power electronic devices. Antiferroelectric ceramics generally exhibit ultrahigh energy density owing to their giant polarization activated by antiferroelectric–ferroelectric phase transition under a high electric field but suffer from large hysteresis, meanwhile giving rise to low efficiency. Herein, by introducing perovskite compound Sr(Fe0.5Ta0.5)O3 into an antiferroelectric NaNbO3 matrix, a stabilized antiferroelectric phase and an improved relaxor behavior are observe
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34

Curecheriu, Lavinia, Maria Teresa Buscaglia, Vlad Alexandru Lukacs, Leontin Padurariu, and Cristina Elena Ciomaga. "Role of Density and Grain Size on the Electrocaloric Effect in Ba0.90Ca0.10TiO3 Ceramics." Materials 15, no. 21 (2022): 7825. http://dx.doi.org/10.3390/ma15217825.

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Pure perovskite Ba0.90Ca0.10TiO3 ceramics, with a relative density of between 79 and 98% and grain sizes larger than 1 µm, were prepared by solid-state reaction. The dielectric and electrocaloric properties were investigated and discussed considering the density and grain size of the samples. Room temperature impedance measurements show good dielectric properties for all ceramics with relative permittivity between 800 and 1100 and losses of <5%. Polarization vs. E loops indicates regular variation with increasing sintering temperature (grain size and density), an increase in loop area, and
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35

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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36

Yoo, H. S., Y. H. Son, Tae Whan Hong, Soon Chul Ur, Sung Lim Ryu, and Soon Young Kweon. "Microstructure Characteristics and Electrical Properties of Sintered (Bi,La)4Ti3O12 Ferroelectric Ceramics." Materials Science Forum 534-536 (January 2007): 565–68. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.565.

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1mm-thick BLT ceramics were sintered in accordance with a bulk ceramic fabrication process. All XRD peaks detected in the sintered ceramics were indexed as the Bi-layered perovskite structure without secondary phases. Density was increased with increasing the sintering temperature up to 1050°C and the maximum value was about 98% of the theoretical density. The remanent polarization (2Pr) value of BLT ceramic sintered at 1050°C was approximately 6.5 μC/cm2 at the applied voltage of 4.5kV. The calculated electromechanical couping factor (kt) of it was about 5% and the mechanical quality factor (
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37

ZHANG, X., G. Q. ZHANG, J. MIAO, X. G. XU, and Y. JIANG. "ENHANCED MULTIFERROIC PROPERTIES OF BiFeO3 CERAMICS BY Mo DOPING." Modern Physics Letters B 25, no. 18 (2011): 1521–28. http://dx.doi.org/10.1142/s0217984911026371.

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We have investigated the magnetic and electrical properties of multiferroic BiFe 1-x Mo x O 3 ceramics ( BFMO , x = 0.0%, 0.2%, 0.5% and 0.8%) prepared by the sol–gel method. The phase structure of BFMO samples were confirmed by X-ray diffraction. It was found that the substitution of Mo is responsible for the increasing of the magnetization in BFMO ceramics. Moreover, both dielectric and polarization-electric field properties suggest that the Mo doping could improve the dielectric and ferroelectric properties in BFMO ceramic.
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Hao, Ji Gong, Zhi Jun Xu, Rui Qing Chu, et al. "Study on Ferroelectric and Dielectric Properties of Zr-Doped Sr2Bi4Ti5O18 Ceramics." Advanced Materials Research 105-106 (April 2010): 248–51. http://dx.doi.org/10.4028/www.scientific.net/amr.105-106.248.

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Zr-doped Sr2Bi4Ti5O18 (SBTi) bismuth layer-structured ferroelectric ceramics were prepared and studied. XRD patterns revealed that all the ceramic samples were single phase compounds. SEM images showed that dense microstructures with uniform gain size were obtained in all samples. The effects of Zr4+ doping on the dielectric, ferroelectric and piezoelectric properties of SBTi ceramics were also investigated. It was found that Zr4+ dopant gradually decreased the Curie temperature (Tc), enhanced the remnant polarization (2Pr) and decreased the coercive field (Ec) of SBTi ceramics. Furthermore, t
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Peláiz, Barranco Aimé, los Santos Guerra José de, Zaldívar Osmany García, et al. "Phase transition and dielectric properties of La-doped Pb(Zr, Ti)O3 antiferroelectric ceramics." Solid State Communications 149 (May 13, 2009): 1308–11. https://doi.org/10.5281/zenodo.14685738.

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Lanthanum modified lead zirconate titanate (PLZT) ceramics with a Zr/Ti (90=10) ratio were investigated for a 7 and 8 at% lanthanum content by dielectric spectroscopy, the Sawyer-Tower polarization technique and x-ray diffraction measurements. The ceramics were obtained using a standard ceramic method, showing an antiferroelectric (orthorhombic) phase (Pbam). Electric field dependence of polarization (P-E) studies revealed slim-like hysteresis loop characteristics. The temperatures corresponding to the maximum real and imaginary parts of the dielectric permittivity were not only coincident, bu
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40

Li, Yuanzhe, Xiang Huang, Junyu Tao, et al. "Effect of Pre-Polarization Process on the Apparent Piezoelectric Response Measured by Point-Ring Method in Ferroelectric Perovskite Oxide Ceramics." Energies 15, no. 10 (2022): 3627. http://dx.doi.org/10.3390/en15103627.

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Both flexoelectricity and piezoelectricity belong to the electromechanical coupling effect. While piezoelectricity only exists in materials whose crystal structure is noncentrosymmetric and a pre-polarization process is necessary for ferroelectric piezoelectric ceramics, flexoelectricity theoretically exists in all dielectric materials and does not require pre-polarization. However, this does not mean that flexoelectricity would not be affected by the pre-polarization process, considering that flexoelectricity is a polarization phenomenon. In this work, we prepared ferroelectric perovskite oxi
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41

Wen, Xufeng, Yanfeng Gao, Hua Zhang, and Yaxin Yang. "Parallel Grooved Microstructure Manufacturing on the Surface of Si3N4 Ceramics by Femtosecond Laser." Micromachines 15, no. 3 (2024): 394. http://dx.doi.org/10.3390/mi15030394.

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Machining special microstructures on the surface of silicon nitride ceramics helps improve their service performance. However, the high brittleness and low fracture toughness of silicon nitride ceramics make it extremely difficult to machine microstructures on their surface. In this study, a femtosecond laser is used to machine parallel grooved microstructures on the surface of silicon nitride ceramics. The effects of the laser polarization angle, laser single pulse energy, scanning line spacing, and laser scan numbers on the surface morphology and geometric characteristics of grooved microstr
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42

Pattipaka, Srinivas, Yeseul Lim, Yundong Jeong, et al. "Improving the Energy Storage Performance in Bi0.5Na0.5TiO3-Based Ceramics by Combining Relaxor and Antiferroelectric Properties." Materials 17, no. 20 (2024): 5044. http://dx.doi.org/10.3390/ma17205044.

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Ceramic capacitors have received great attention for use in pulse power systems owing to their ultra-fast charge–discharge rate, good temperature stability, and excellent fatigue resistance. However, the low energy storage density and low breakdown strength (BDS) of ceramic capacitors limit the practical applications of energy storage technologies. In this work, we present a series of relaxor ferroelectric ceramics (1−x) [0.94 Bi0.5Na0.5TiO3 –0.06BaTiO3]– x Sr0.7Bi0.2TiO3 (1-x BNT-BT- x SBT; x = 0, 0.20, 0.225, 0.25, 0.275 and 0.30) with improved energy storage performances by combining relaxo
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43

TANGSRITRAKUL, Jirapa, Chumpon WICHITTANAKOM, and Chatree SAIYASOMBAT. "Composition-driven phase coexistence and functional properties of the (1-x)BZT-(x)BCT ceramics near the phase convergence region." Journal of Metals, Materials and Minerals 34, no. 1 (2024): 1798. http://dx.doi.org/10.55713/jmmm.v34i1.1798.

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The concept of composition-induced phase transformation in Lead Zirconate Titanate (PZT) at the Morphotropic Phase Boundary (MPB) has been employed to improve functional properties of the (1-x)BZT-(x)BCT ceramic. However, it was observed that the phase diagram of the (1-x)BZT-(x)BCT ceramic is different to the PZT. As a result, the nature of the superior functional properties found in (1-x)BZT-(x)BCT ceramic is unlike PZT and still unclear so far. In this work, functional properties; dielectric, ferroelectric, energy storage, and piezoelectric properties, of the (1-x)BZT-(x)BCT ceramics where
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44

Kar, Subrat, and Pawan Kumar. "Permittivity and modulus spectroscopic study of BaFe0.5Nb0.5O3 ceramics." Processing and Application of Ceramics 7, no. 4 (2013): 181–87. http://dx.doi.org/10.2298/pac1304181k.

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Ba(Fe0.5Nb0.5)O3 (BFN) powder was synthesized in single perovskite phase by conventional solid state reaction route and BFN ceramic was obtained by uniaxial pressing and sintering at 1350?C. Complex immittance like: permittivity and modulus spectroscopic formalism were simultaneously used to explain dielectric behaviour of the ceramics. The activation energy calculated from dielectric relaxation below 100?C was found to be ~ 0.19 eV. The activation energy obtained from modulus spectra above 100?C was ~0.59 eV. The space charge polarization model was used to explain the origin of relaxation and
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45

Zhang, Yun Long, Yu Min Zhang, Zhi Qiu Huang, and Ping Liao. "Influence of KF Concentration on the Coating Performance of SiCn/Mg Composites." Advanced Materials Research 997 (August 2014): 461–64. http://dx.doi.org/10.4028/www.scientific.net/amr.997.461.

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The network SiC ceramics was prepared by organic foam impregnation and pressure-less sintering technology. The co-continuous SiCn/Mg composites were fabricated by vacuum infiltration methods. The results proved that coarse surface was observed on the surface of SiC network ceramics, which was helpful for interface reaction of metal alloy during impregnation process. The continuous interface can be formed in the SiCn/Mg composites. KF concentration had more important influence on coatings morphologies and polarization behaviors of SiCn/Mg composites during micro-arc oxidation process.Key words:
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46

Dong, Xiaoyan, Xu Li, Hongyun Chen, et al. "Realizing enhanced energy storage and hardness performances in 0.90NaNbO3−0.10Bi(Zn0.5Sn0.5)O3 ceramics." Journal of Advanced Ceramics 11, no. 5 (2022): 729–41. http://dx.doi.org/10.1007/s40145-022-0566-6.

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AbstractCeramic dielectric capacitors have a broad scope of application in pulsed power supply devices. Relaxor behavior has manifested decent energy storage capabilities in dielectric materials due to its fast polarization response. In addition, an ultrahigh energy storage density can also be achieved in NaNbO3 (NN)-based ceramics by combining antiferroelectric and relaxor characteristics. Most of the existing reports about lead-free dielectric ceramics, nevertheless, still lack the relevant research about domain evolution and relaxor behavior. Therefore, a novel lead-free solid solution, (1−
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47

Burovikhin, A. P., I. L. Mylnikov, A. I. Dedyk, et al. "Measurements of pyroelectric coefficients of BT and BST ceramics." Journal of Physics: Conference Series 2103, no. 1 (2021): 012085. http://dx.doi.org/10.1088/1742-6596/2103/1/012085.

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Abstract In the work, the field and temperature dependencies on the pyroelectric coefficients of ceramic capacitor structures were measured. Barium titanate (BT) and solid solutions of barium-strontium titanate (BST) were investigate. At temperatures range from 20 °C to 30 °C, the values of the pyroelectric coefficients of the BST ceramics (p) 10-5 - 10-4 C/m2 K exceeded p for the BT ceramics by an order. The developed measurement technique made it possible to carry out direct pyroelectric coefficients measurements and determine the polarization initial state of the samples, regardless of thei
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Wu, Jianhua, Ziyue Ma, Yuan Yao, et al. "Enhanced Energy-Storage Performances in Sodium Bismuth Titanate-Based Relaxation Ferroelectric Ceramics with Optimized Polarization by Tuning Sintering Temperature." Materials 15, no. 14 (2022): 4981. http://dx.doi.org/10.3390/ma15144981.

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Energy-storage capacitors based on relaxation ferroelectric ceramics have attracted a lot of interest in pulse power devices. How to improve the energy density by designing the structure of ceramics through simple approaches is still a challenge. Herein, enhanced energy-storage performances are achieved in relaxation ferroelectric 0.9 (0.94Na0.5Bi0.5TiO3-0.06BaTiO3)-0.1NaNbO3 (NBT-BT-NN) ceramics by tuning sintering temperature. The original observation based on Kelvin probe force microscopy (KPFM) presented that the sintering temperature has a key effect on the electrical homogeneousness of t
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49

Wu, Yun Yi, Lei Wang, Zhi Qiang Hua, Tao Li, Xue Tao Yuan, and Xu Dong Lv. "Effects of Ion Doping at Different Sites on Electrical Properties of Ferroelectric Bi4Ti3O12 Ceramics." Advanced Materials Research 399-401 (November 2011): 796–804. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.796.

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Pure, La3+doped at A site, V5+doped at B site, and La3+and V5+co-doped ferroelectric Bi4Ti3O12(BTO), Bi3.25La0.75Ti3O12(BLT), Bi4Ti2.98V0.02O3(BTV) and Bi3.25La0.75Ti2.98V0.02O12(BLTV) were successfully prepared by conventional sintering technique. The structures of the ceramics were investigated by X-ray diffraction, Raman spectroscopy, and scanning electron microscopy. X-ray diffraction indicated that assemblages of all sintered ceramics consist of a single phase of Bi4Ti3O12, implying that the A-site La3+and B-site V5+substitutions in this case do not affect the layered structure. Among the
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Yang, Xing Hua, Jin Liang Huang, Xiao Wang, and Chun Wei Cui. "Study on the Properties of Doped La in BaBi4Ti4O15 Ceramic." Advanced Materials Research 26-28 (October 2007): 243–46. http://dx.doi.org/10.4028/www.scientific.net/amr.26-28.243.

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BaBi4-xLaxTi4O15 (BBLT) ceramics were prepared by conventional solid phase sintering ceramics processing technology. The crystal structure and the microstructure were detected by X-ray diffraction (XRD) and scanning electron microscope (SEM). The XRD analyses show that La3+ ions doping did not change the crystal structure of BBT ceramics. The sintering temperature increased from 1120°C to 1150°C with increasing Lanthanum content from 0 to 0.5, but it widened the sintering temperature range from 20°C to 50°C and refined the grain size of the BBT ceramic. Additionally, polarization treatment was
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