Field-induced orthorhombic phase in relaxor-based ferroelectric single crystals Pb(Mg1/3Nb2/3)O3-PbTiO3

被引：8

作者：

Guo, YP ^{[1
]}

Luo, HS ^{[1
]}

Xu, HQ ^{[1
]}

Wang, PC ^{[1
]}

Yin, ZW ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 201800, Peoples R China

来源：

FERROELECTRICS | 2002年 / 281卷

关键词：

lead magnesium niobate titanate; electric-field induced phase transition; metastable; dielectric properties; piezoelectric coefficients;

D O I：

10.1080/00150190190028329

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A field-induced orthorhombic phase was observed on the (110)(cub) cuts in 0.68Pb(Mg1/3Nb2/3)O-3-0.32PbTiO(3) (PMNT 68/32) single crystals by using a polarizing microscope and electrical measurements. It was found that the induced monodomain orthorhombic ferroelectric state is intrinsic metastable, whose phase stability depends on the composition and poling field intensively, and it does not exhibit enhanced piezoelectricity, the piezoelectric coefficient d(33) are only about 300 pC/N. Whereas the coupling between two equivalent energy states, i.e., the rhombohedral (monoclinic) and orthorhombic phases is responsible for the high piezoelectric responses, the piezoelectric coefficient d(33) can reach up to 1600 pC/N.

引用

页码：79 / 86

页数：8

共 17 条

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