Importance of random fields on the properties and ferroelectric phase stability of ⟨001⟩ oriented 0.7 Pb(Mg1/3Nb2/3)O3-0.3 PbTiO3 crystals

被引：66

作者：

Viehland, D ^{[1
]}

Powers, J

Cross, LE

Li, JF

机构：

[1] USN, Sea Syst Command, Newport, RI 02841 USA

[2] Penn State Univ, Mat Res Lab, State Coll, PA 16802 USA

[3] Univ Rhode Isl, Dept Phys, S Kingston, RI 02845 USA

来源：

APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 22期

关键词：

D O I：

10.1063/1.1368371

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Temperature dependent dielectric constant measurements have been performed on < 001 > oriented 0.7 Pb(Mg1/3Nb2/3)O-3-0.3 PbTiO3 crystals. These investigations have revealed an irreversible secondary transformation between a normal ferroelectric state and a relaxor ferroelectric state with increasing temperature. The results demonstrate that the anisotropy of the high performance piezocrystal state is only metastably locked in under application of field. Clearly, local random fields play a crucial role upon the ferroelectric phase stability and properties of < 001 > oriented piezocrystals. (C) 2001 American Institute of Physics.

引用

页码：3508 / 3510

页数：3

共 15 条

[1] Finite-temperature properties of Pb(Zr1-xTix)O3 alloys from first principles [J].