Anisotropic properties and crystal structure of ferroelectric Na0.5Bi4.5Ti4O15

被引：10

作者：

Li, Zhengfa ^{[1
,2
,3
,4
,5
]}

Chan, H. L. W. ^{[4
,5
]}

Li, Yongxiang ^{[1
,2
]}

Kwok, K. W. ^{[4
,5
]}

Choy, S. H. ^{[4
,5
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Shanghai 200050, Peoples R China

[3] China Jiliang Univ, Coll Mat Sci & Engn, Hangzhou 310018, Peoples R China

[4] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China

[5] Hong Kong Polytech Univ, Mat Res Ctr, Kowloon, Hong Kong, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 506卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Dielectric property; Ferroelectric; Na0.5Bi4.5Ti4O15; Phase transition; SOL-GEL METHOD; PIEZOELECTRIC PROPERTIES; ELECTRICAL-PROPERTIES; CERAMICS; PIEZOCERAMICS; COMPOUND;

D O I：

10.1016/j.jallcom.2010.07.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Bismuth layer-structured ferroelectric sodium bismuth titanate Na0.5Bi4.5Ti4O15 (NBT4) was prepared by conventional solid-state reaction method, and its dielectric and ferroelectric properties are investigated. The dielectric spectra of NBT4 ceramics obviously display anisotropic behaviors, in which the large thermal hysteresis loops with anisotropy are found for first-order phase transitions of NBT4. Based on the analyses of obtained XRD and SEM results, the special anisotropic responses maybe contributed to pseudo-perovskite blocks and bismuth layers (Bi2O2)(2+) for their stages of lattice transitions in NBT4 compound. Crown Copyright (c) 2010 Published by Elsevier B.V. All rights reserved.

引用

页码：70 / 72

页数：3

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