Neutron diffuse scattering of (1-x)(Na0.5Bi0.5)TiO3-xBaTiO3 relaxor ferroelectric single crystals

被引：19

作者：

Zhang, Haiwu ^{[1
,2
]}

Deng, Guochu ^{[3
]}

Studer, Andrew J. ^{[3
]}

Li, Xiaobing ^{[1
]}

Zhao, Xiangyong ^{[1
]}

Luo, Haosu ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Devices, Shanghai 201800, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

[3] Australian Nucl Sci & Technol Org, Bragg Inst, Kirrawee Dc, NSW 2232, Australia

来源：

SCRIPTA MATERIALIA | 2014年 / 86卷

关键词：

Ferroelectric; Single crystals; Neutron scattering; Local structure; PHASE-TRANSITIONS; ELECTRON-MICROSCOPY; TETRAGONAL PHASE; NA0.5BI0.5TIO3; TEM; NA1/2BI1/2TIO3;

D O I：

10.1016/j.scriptamat.2014.04.011

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Peculiar L-shaped diffuse streaks along <00 l>(pc) observed in (Na0.5Bio.5)TiO3 (NBT) below the Burns temperature, revealing the existence of polar nanoregions (PNRs). The displacement of Bi5+ cations is,-,0.26 A along <0 0 1>pc in the PNRs, with a size of l3 A in NBT. The BaTiO3 doping drives the diffuse scattering patterns to evolve from the L-shape into an ellipsoidal along <0 1 1 >pc in (Na0.5Bi0.5)TiO3 xBaTiO3. An abnormally large correlation length was observed in the morphotropic phase boundary composition with x = 0.05. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：5 / 8

页数：4

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