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1,097 results on '"He, Xinhua"'

25. Vision-Based Global Positioning System Using Improved GMS Algorithm for a UAV

Author

Xin, Long, He, Xinhua, Cui, Xin, Liu, Ziyu, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Fu, Wenxing, editor, Gu, Mancang, editor, and Niu, Yifeng, editor

Published
2023
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29. Effect of LiF doping on structure, ferroelectric and piezoelectric properties of BiFeO3-BaTiO3 ceramics

Author

HE Xiujiang, WANG Xinyang, HE Xinhua, WANG Xin, and LU Zhenya

Subjects
bifeo3-batio3, lead-free, lif doping, piezoelectric property, ferroelectric property, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

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 ℃.

Published
2023
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