Effects of thermal and electrical histories on structure and dielectric behaviors of (Li0.5Nd0.5)2+-modified (Bi0.5Na0.5) TiO3-BaTiO3 ceramics

被引：10

作者：

Xu, Jiwen ^{[1
]}

Li, Qingning ^{[1
]}

Yang, Ling ^{[1
]}

Zeng, Weidong ^{[1
]}

Zhou, Changrong ^{[1
]}

Yuan, Changlai ^{[1
]}

Chen, Guohua ^{[1
]}

Rao, Guanghui ^{[1
]}

机构：

[1] Guilin Univ Elect Technol, Guangxi Key Lab Informat Mat, Guilin 541004, Guangxi, Peoples R China

来源：

JOURNAL OF MATERIOMICS | 2017年 / 3卷 / 02期

关键词：

Ceramics; Dielectric properties; Ferroelectricity; Piezoelectricity; B-SITE SUBSTITUTION; PIEZOELECTRIC PROPERTIES; LEAD-FREE; MICROSTRUCTURE; FERROELECTRICS; PHASE; IONS;

D O I：

10.1016/j.jmat.2016.11.007

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：

The effect of thermal and electrical histories on structure and dielectric behaviors is studied using 0.95(Bi0.5Na0.5)(0.97)(Li0.5Nd0.5)(0.03)TiO3-0.05BaTiO3 (abbreviated as BNTLN0.03-BT5) ceramic as a selected system. Subtle structure change caused by annealing treatment, and pronounced phase transition and domain switching by electrical poling, are observed to occur, respectively. The dielectric constant and its strong frequency dispersion in unpoled samples decrease evidently by electrical poling due to electric field-induced ordered domain. The high temperature Maxwell-Wagner relaxor behavior vanishes by annealing treatment due to the loss of electrical inhomogeneity with interface charging effects. Piezoelectric properties are improved evidently by annealing treatment at 900 degrees C, implying a new appropriate method to improve piezoelectric properties. (C) 2017 The Chinese Ceramic Society. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license

引用

页码：121 / 129

页数：9

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