自然科学版
陕西师范大学学报(自然科学版)
电介质物理和材料专刊
(Na0.5Bi0.5)0.94Ba0.06TiO3陶瓷的结构及电学性能:点缺陷效应研究进展
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陈晓明*,刘丽娜,王星星,刘美丹
(陕西师范大学 物理学与信息技术学院, 陕西 西安 710119)
陈晓明,男,教授,博士生导师,主要研究方向为电介质物理与材料。E-mail: xmchen@snnu.edu.cn
摘要:
从点缺陷效应角度综述了无铅压铁电陶瓷(Na0.5Bi0.5)0.94Ba0.06TiO3的结构和电学性能研究进展,分析了(Na0.5Bi0.5)0.94Ba0.06TiO3陶瓷中点缺陷的类型和存在方式,给出了描述陶瓷点缺陷的相关手段,重点讨论了3种引入点缺陷的手段:离子非计量比、离子掺杂、生长工艺,分析三者对(Na0.5Bi0.5)0.94Ba0.06TiO3陶瓷的结构和电学性能的影响;给出了离子非计量比、离子掺杂、生长工艺引起(Na0.5Bi0.5)0.94Ba0.06TiO3陶瓷中点缺陷的种类与浓度差异,以及其所对应的陶瓷结构和电学性能特征,为从点缺陷效应角度设计和调控功能陶瓷的结构和电学性能提供借鉴与参考。
关键词:
钛酸铋钠陶瓷;(Na0.5Bi0.5)0.94Ba0.06TiO3;点缺陷;结构;电学性能
收稿日期:
2021-04-20
中图分类号:
O483,O487
文献标识码:
A
文章编号:
1672-4291(2021)04-0001-29
基金项目:
国家自然科学基金(51972202);中央高校基本科研业务费专项资金(GK201901005,2020TS027)
Doi:
An overview of structure and electrical properties of (Na0.5Bi0.5)0.94Ba0.06TiO3 ceramics: point defects effect
CHEN Xiaoming*, LIU Lina, WANG Xingxing, LIU Meidan
(School of Physics and Information Technology, Shaanxi Normal University,Xi′an 710119, Shaanxi, China)
Abstract:
As one of lead-free piezoelectric and ferroelectric ceramics, structure and electrical properties of (Na0.5Bi0.5)0.94Ba0.06TiO3 ceramics have been widely studied. Effects of point defects in (Na0.5Bi0.5)0.94Ba0.06TiO3 ceramics, are summarized in this work. The contents include introduction of crystallite structure and electrical properties of (Na0.5Bi0.5)0.94Ba0.06TiO3 ceramics, point defects in (Na0.5Bi0.5)0.94Ba0.06TiO3, reported methods for characterizing point defects, effects of ion nonstoichiometry, ion doping, technology parameters on structure and electrical properties of (Na0.5Bi0.5)0.94Ba0.06TiO3 ceramics. Ion nonstoichiometry, ion doping, and technology parameters can cause changes in type and concentration of point defects, which will affect structure and electrical properties of (Na0.5Bi0.5)0.94Ba0.06TiO3 ceramics. Based on the overview about point defect effects of structrue and electrical properties of (Na0.5Bi0.5)0.94Ba0.06TiO3 ceramics, it is hoped to provide reference for the design and control structrue and electrical properties of functional ceramics via the point defect effects.
KeyWords:
bismuth sodium titanate ceramics; (Na0.5Bi0.5)0.94Ba0.06TiO3; point defects; structure; electrical properties