中国物理B ›› 2011, Vol. 20 ›› Issue (9): 97702-097702.doi: 10.1088/1674-1056/20/9/097702

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Electromechanical-induced antiferroelectric–ferroelectric phase transition in PbLa(Zr,Sn,Ti)O3 ceramic

徐卓1, 高俊杰1, 姚熹1, 张崇辉2, 朱长军2   

  1. (1)Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710048, China; (2)School of Science, Xi'an Polytechnic University, Xi'an 710048, China
  • 收稿日期:2010-10-25 修回日期:2011-04-09 出版日期:2011-09-15 发布日期:2011-09-15

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)   

  1. 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
  • Received:2010-10-25 Revised:2011-04-09 Online:2011-09-15 Published:2011-09-15

摘要: 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.

关键词: antiferroelectric ceramic, dielectric constant, hydrostatic pressure, phase transition

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.

Key words: antiferroelectric ceramic, dielectric constant, hydrostatic pressure, phase transition

中图分类号:  (Ferroelectricity and antiferroelectricity)

  • 77.80.-e
77.22.Ch (Permittivity (dielectric function)) 62.50.-p (High-pressure effects in solids and liquids)