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

被引：17
|
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.
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收藏
页码：5 / 8
页数：4
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