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BaTiO3基半导体正温度系数陶瓷研究进展

发表时间:2017-06-30  浏览量:60  下载量:42
全部作者: 张茂林,薛彤彤,王瑞泽,胡金志,安承泽
作者单位: 西安电子科技大学先进材料与纳米科技学院
摘 要: BaTiO3基陶瓷正温度系数(positive temperature coefficient,PTC)热敏电阻是一种重要的功能器件,其主要性能参数为室温电阻率、升阻比和居里温度。通过论述BaTiO3基陶瓷近年来的研究历史、现状和最新进展发现,通过施主掺杂改变能级结构是实现晶粒半导化、降低室温电阻率的主要途径;利用晶界受主状态形成可控晶界势垒是调控PTC效应的重要手段;采用高温铁电型温度移动剂是调节BaTiO3基陶瓷PTC居里温度的有效技术方向。同时展望了PTC材料与器件在多重敏感功能性和新型PTC物理机制等方面的发展方向及应用前景。
关 键 词: 无机非金属材料其他学科;BaTiO3;综述;热敏电阻;晶界;居里温度
Title: Recent process in BaTiO3-based positive temperature coefficient ceramic material
Author: ZHANG Maolin, XUE Tongtong, WANG Ruize, HU Jinzhi, AN Chengze
Organization: School of Advanced Materials and Nanotechnology, Xidian University
Abstract: BaTiO3-based ceramic positive temperature coefficient (PTC) thermistor is an important functional device, mainly focusing on its electrical performances of room temperature resistance, resistance jump ratio and Curie temperature. In this paper, the study history, current situation and the latest process on BaTiO3ceramics are discussed. It is found that donor doping changing the energy level structure is the main way to realize the semiconducting and reduces the room temperature resistance. The formation of controllable grain boundary barrier by using the grain boundary acceptor state is an important method to control the PTC effect. Meanwhile, addition of the ferroelectric phase into the semiconducting BaTiO3-based ceramics is considered as an effective way to increase the Curie temperature. In addition, the new development trends of PTC materials with new physical mechanisms and applications are also discussed.
Key words: other subjects of inorganic nonmetallic materials; BaTiO3; review; thermistor; grain boundary; Curie temperature
发表期数: 2017年6月第12期
引用格式: 张茂林,薛彤彤,王瑞泽,等. BaTiO3基半导体正温度系数陶瓷研究进展[J]. 中国科技论文在线精品论文,2017,10(12):1319-1327.
 
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