Domain configurations in relaxer ferroelectric single crystals Pb(Mg1/3Nb2/3)O3-PbTiO3

被引：14

作者：

Xu, GS ^{[1
]}

Luo, HS ^{[1
]}

Qi, ZY ^{[1
]}

Xu, HQ ^{[1
]}

Yin, ZW ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Lab Funct Inorgan Mat, Shanghai 201800, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH | 2001年 / 16卷 / 04期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1557/JMR.2001.0132

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The 90 degrees macrodomains in tetragonal Pb(Mg1/3Nb2/3)O-PbTiO3 (PMNT) crystals take the shape of coarse and straight strips under optical microscopes and scanning electron acoustic microscopes. However, 71 degrees or 109 degrees domains in rhombohedral PMNT crystals are relatively poor in contrast and become clearer, coarser and straighter as their composition becomes closer to morphotropic phase boundaries, showing an evolution series of micro-to-macro domain transformation. Moreover, domain configurations are also dependent on the nucleation and growth rate of domains, the crystal defects, and the cooling rate through Curie temperature. The appearance of macrodomains arises from the strengthening of depolarization field and the weakening of random field.

引用

页码：932 / 937

页数：6

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