Electric-field-induced volume change and room temperature phase stability of (Bi1/2Na1/2)TiO3-x mol. % BaTiO3 piezoceramics

被引：128

作者：

Jo, Wook ^{[1
]}

Roedel, Juergen ^{[1
]}

机构：

[1] Tech Univ Darmstadt, Inst Mat Sci, D-64287 Darmstadt, Germany

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 04期

关键词：

FREE PIEZOELECTRIC CERAMICS; RELAXOR FERROELECTRICS; LEAD; NA0.5BI0.5TIO3; PEROVSKITES;

D O I：

10.1063/1.3615675

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Phase stability of (1 - x) (Bi1/2Na1/2)TiO3-x BaTiO3 (0 <= x <= 0.15) under electric field was investigated by measuring volume changes during a bipolar poling cycle. The unique nature of field-dependent phase stability with three distinctive regions is revealed by comparative studies using commercial soft PZT and relaxor PLZT. For x <= 0.06 and x >= 0.13, similarly with PZT and PLZT, the axial strain expands with the contracting radial strain, but the former results in a remanent volume demonstrating an electric-field-induced phase transition. For 0.08 <= x <= 0.12, this field-induced phase transition is distinguished by negligible radial contractions implying polarization rotation. A "poling-induced" morphotropic phase boundary forms at x = 0.07. (C) 2011 American Institute of Physics. [doi:10.1063/1.3615675]

引用

页数：3

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