Universal phase diagram for high-piezoelectric perovskite systems

被引：283

作者：

Cox, DE

Noheda, B ^{[1
]}

Shirane, G

Uesu, Y

Fujishiro, K

Yamada, Y

机构：

[1] Brookhaven Natl Lab, Upton, NY 11973 USA

[2] Waseda Univ, Shinjuku Ku, Tokyo 169, Japan

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 03期

关键词：

D O I：

10.1063/1.1384475

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Strong piezoelectricity in perovskite-type PbZn1-xTixO3 (PZT) and Pb(Zn1/3Nb2/3)O-3-PbTiO3 (PZN-PT) systems is generally associated with the existence of a morphotropic phase boundary (MPB) separating regions with rhombohedral and tetragonal symmetry. An x-ray study of PZN-9% PT has revealed the presence of an orthorhombic phase at the MPB, and a near-vertical boundary between the rhombohedral and orthorhombic phases, similar to that found for PZT between the rhombohedral and monoclinic phases. We discuss the results in the light of a recent theoretical paper by Vanderbilt and Cohen [Phys. Rev. B 63, 94108 (2001)], which attributes these low-symmetry phases to the high anharmonicity in these oxide systems. (C) 2001 American Institute of Physics.

引用

页码：400 / 402

页数：3

共 17 条

[1]

[Anonymous], 1993, FERROELECTRIC CRYSTA

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