Effect of LiF doping on structure, ferroelectric and piezoelectric properties of BiFeO3-BaTiO3 ceramics
0.7BiFeO3-0.3BaTiO3+0.35%(mole fraction, the same below)MnO2+x%LiF piezoelectric ceramics(BF-BT-MN-xLF) were synthesized via a solid state reaction process. The phase composition, microstructure, ferroelectric and piezoelectric properties of BF-BT-MN-xLF ceramics were measured by XRD, SEM, ferroelec...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2023-06-01
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| Series: | Cailiao gongcheng |
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| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000817 |
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| author | HE Xiujiang WANG Xinyang HE Xinhua WANG Xin LU Zhenya |
| author_facet | HE Xiujiang WANG Xinyang HE Xinhua WANG Xin LU Zhenya |
| author_sort | HE Xiujiang |
| collection | DOAJ |
| description | 0.7BiFeO3-0.3BaTiO3+0.35%(mole fraction, the same below)MnO2+x%LiF piezoelectric ceramics(BF-BT-MN-xLF) were synthesized via a solid state reaction process. The phase composition, microstructure, ferroelectric and piezoelectric properties of BF-BT-MN-xLF ceramics were measured by XRD, SEM, ferroelectric test system and precision impedance analyzer. The results indicate that LiF doping enhances lattice distortion, promotes sintering and grain growth, as well as the temperature stability of piezoelectric performance. The orientation of the composite defect dipoles produced by the inequivalent substitution of Li+ and F- for A/B site, lags behind the changes in the electric field, and consequently brings about a clamping hysteresis loop. Meanwhile, the investigation on the depolarization behavior and Curie temperature for BF-BT-MN-xLF ceramics reveals that both Curie temperature Tc and depolarization temperature Td increase remarkably, and Tc and Td increase from 500 ℃ and 410 ℃(x=0) to 550 ℃ and 505 ℃(x=0.50), respectively. When the doping amount of LiF is 0.50%, the ceramics sintered at 860-1020 ℃, maintain excellent piezoelectric activity with a high d33 value of 176-202 pC/N. The ceramics with x=0.50 sintered at 960 ℃ show the optimum piezoelectric properties: d33=202 pC/N, kp=34%, Tc≈550 ℃, Td1≈505 ℃. |
| first_indexed | 2024-03-13T04:25:49Z |
| format | Article |
| id | doaj.art-5c9398dee64a4f06b448cd360d06ac88 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 |
| language | zho |
| last_indexed | 2024-03-13T04:25:49Z |
| publishDate | 2023-06-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-5c9398dee64a4f06b448cd360d06ac882023-06-20T04:31:47ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812023-06-01516465110.11868/j.issn.1001-4381.2021.00081720230606Effect of LiF doping on structure, ferroelectric and piezoelectric properties of BiFeO3-BaTiO3 ceramicsHE Xiujiang0WANG Xinyang1HE Xinhua2WANG Xin3LU Zhenya4School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, ChinaSchool of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, ChinaSchool of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, ChinaSchool of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, ChinaSchool of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China0.7BiFeO3-0.3BaTiO3+0.35%(mole fraction, the same below)MnO2+x%LiF piezoelectric ceramics(BF-BT-MN-xLF) were synthesized via a solid state reaction process. The phase composition, microstructure, ferroelectric and piezoelectric properties of BF-BT-MN-xLF ceramics were measured by XRD, SEM, ferroelectric test system and precision impedance analyzer. The results indicate that LiF doping enhances lattice distortion, promotes sintering and grain growth, as well as the temperature stability of piezoelectric performance. The orientation of the composite defect dipoles produced by the inequivalent substitution of Li+ and F- for A/B site, lags behind the changes in the electric field, and consequently brings about a clamping hysteresis loop. Meanwhile, the investigation on the depolarization behavior and Curie temperature for BF-BT-MN-xLF ceramics reveals that both Curie temperature Tc and depolarization temperature Td increase remarkably, and Tc and Td increase from 500 ℃ and 410 ℃(x=0) to 550 ℃ and 505 ℃(x=0.50), respectively. When the doping amount of LiF is 0.50%, the ceramics sintered at 860-1020 ℃, maintain excellent piezoelectric activity with a high d33 value of 176-202 pC/N. The ceramics with x=0.50 sintered at 960 ℃ show the optimum piezoelectric properties: d33=202 pC/N, kp=34%, Tc≈550 ℃, Td1≈505 ℃.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000817bifeo3-batio3lead-freelif dopingpiezoelectric propertyferroelectric property |
| spellingShingle | HE Xiujiang WANG Xinyang HE Xinhua WANG Xin LU Zhenya Effect of LiF doping on structure, ferroelectric and piezoelectric properties of BiFeO3-BaTiO3 ceramics Cailiao gongcheng bifeo3-batio3 lead-free lif doping piezoelectric property ferroelectric property |
| title | Effect of LiF doping on structure, ferroelectric and piezoelectric properties of BiFeO3-BaTiO3 ceramics |
| title_full | Effect of LiF doping on structure, ferroelectric and piezoelectric properties of BiFeO3-BaTiO3 ceramics |
| title_fullStr | Effect of LiF doping on structure, ferroelectric and piezoelectric properties of BiFeO3-BaTiO3 ceramics |
| title_full_unstemmed | Effect of LiF doping on structure, ferroelectric and piezoelectric properties of BiFeO3-BaTiO3 ceramics |
| title_short | Effect of LiF doping on structure, ferroelectric and piezoelectric properties of BiFeO3-BaTiO3 ceramics |
| title_sort | effect of lif doping on structure ferroelectric and piezoelectric properties of bifeo3 batio3 ceramics |
| topic | bifeo3-batio3 lead-free lif doping piezoelectric property ferroelectric property |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000817 |
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