Phase stability after an electric-field poling in Pb(Mg1/3Nb2/3)1-xTixO3 crystals -: art. no. 220103

被引：37

作者：

Tu, CS ^{[1
]}

Chien, RR

Wang, FT

Schmidt, VH

Han, P

机构：

[1] Fu Jen Catholic Univ, Dept Phys, Taipei 242, Taiwan

[2] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

[3] HC Mat Corp, Urbana, IL 61802 USA

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.70.220103

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work concerns phase thermal stability in (001)-cut Pb(Mg1/3Nb2/3)(1-x)TixO3 crystals after an electric (E)-field poling, which is crucial for piezoelectric applications. Dielectric properties have been measured as functions of Ti content (x=24, 26, 27, 29, 35, and 38%), E-field strength, temperature, and poling process. Domain structures after poling have also been observed by polarizing microscopy. An extra dielectric anomaly, which is mostly associated with the appearance of monoclinic domains, was observed during zero-field heating after poling. A prior poling can reveal a "hidden" phase transition which was not clear in unpoled samples. The monoclinic phase plays an essential role in bridging higher symmetries while phase transitions are taking place.

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页码：220103 / 1

页数：4

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