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Electromechanical-induced antiferroelectric–ferroelectric phase transition in PbLa(Zr,Sn,Ti)O3 ceramic |
Zhang Chong-Hui(张崇辉)a)b)†, Xu Zhuo(徐卓)b), Gao Jun-Jie(高俊杰)b), Zhu Chang-Jun(朱长军)a), and Yao Xi(姚熹)b) |
a School of Science, Xi'an Polytechnic University, Xi'an 710048, China; b Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710048, China |
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Abstract Antiferroelectric—ferroelectric (AFE—FE) phase transition in ceramic Pb0.97La0.02(Zr0.75Sn0.136Ti0.114)O3 (PLZST) was studied by dielectric spectroscopy as functions of frequency (102—105 Hz) and pressure (0—500 MPa) under a DC electric field. The hydrostatic pressure-dependent remnant polarization and dielectric constant were measured. The results show that remnant polarization of the metastable rhombohedral ferroelectric PLZST poled ceramic decreases sharply and depoles completely at phase transition under hydrostatic pressure. The dielectric constant undergoes an abrupt jump twice during a load and unload cycle under an electric field. The two abrupt jumps correspond to two phase transitions, FE—AFE and AFE—FE.
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Received: 25 October 2010
Revised: 09 April 2011
Accepted manuscript online:
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PACS:
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77.80.-e
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(Ferroelectricity and antiferroelectricity)
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77.22.Ch
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(Permittivity (dielectric function))
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62.50.-p
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(High-pressure effects in solids and liquids)
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Cite this article:
Zhang Chong-Hui(张崇辉), Xu Zhuo(徐卓), Gao Jun-Jie(高俊杰), Zhu Chang-Jun(朱长军), and Yao Xi(姚熹) Electromechanical-induced antiferroelectric–ferroelectric phase transition in PbLa(Zr,Sn,Ti)O3 ceramic 2011 Chin. Phys. B 20 097702
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