Crystal structure of the relaxor ferroelectric PZN: demise of the 'X-phase'

被引：27

作者：

Kisi, EH ^{[1
]}

Forrester, JS ^{[1
]}

机构：

[1] Univ Newcastle, Sch Engn, Newcastle, NSW 2308, Australia

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2005年 / 17卷 / 36期

关键词：

D O I：

10.1088/0953-8984/17/36/L01

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The crystal structure of lead zinc niobate (PZN) was studied by very high-resolution neutron powder diffraction using both small (< 143 mu m) and large (1-2 mm) crystals. No evidence was found for the rhombohedral exterior/cubic interior 'X-phase' structure reported by Xu et al (2004 Appl. Phys. Lett. 84 3975-7). The structure is confirmed to be a rhombohedral perovskite in space group R3m. It is concluded that the X-phase observations were due to a rhombohedral domain size and population gradient within the crystals sampled by a small x-ray beam.

引用

页码：L381 / L384

页数：4

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