Local polarization distribution and Edwards-Anderson order parameter of relaxor ferroelectrics

被引：261

作者：

Blinc, R ^{[1
]}

Dolinsek, J ^{[1
]}

Gregorovic, A ^{[1
]}

Zalar, B ^{[1
]}

Filipic, C ^{[1
]}

Kutnjak, Z ^{[1
]}

Levstik, A ^{[1
]}

Pirc, R ^{[1
]}

机构：

[1] Jozef Stefan Inst, Ljubljana 1001, Slovenia

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.83.424

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The temperature dependence of the Edwards-Anderson order parameter YEA and the local polarization distribution function W((p) over right arrow) have been determined in a PMN single crystal via 2D Nb-93 NMR. A glasslike freezing of reorientable polar clusters occurs in the temperature range of the diffuse relaxer transition, whereas the NMR spectra corresponding to pinned nanodomains do nut change with temperature. The obtained form of W((p) over right arrow) as well as the temperature dependence of q(EA) and the nonlinear dielectric susceptibility can be well described by a newly proposed spherical random bond-random field model of relaxer ferroelectrics.

引用

页码：424 / 427

页数：4

共 24 条

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