CaCu3Ti4O12陶瓷介电模量响应特性的研究OA北大核心CSCDCSTPCD
Dielectric modulus response of CaCu3Ti4O12 ceramic∗
由于CaCu3Ti4O12巨介电常数陶瓷的低频区直流电导较大，本文采用模量M′-f 频谱表征与分析了低频和高频的两个松弛极化过程。研究认为，这两个特征峰属于晶界区Schottky势垒耗尽层边缘深陷阱的电子松弛过程，其中高频松弛峰起源于晶粒本征缺陷的电子松弛过程，而低频松弛峰则为与氧空位有关的松弛极化过程。对于CaCu3Ti4O12这类低频下具有高直流电导的陶瓷材料，采用模量频谱能更有效地分析研究其损耗极化机理。
The DC conductivity of the CaCu3Ti4O12 ceramic is considerable at low frequency. The dielectric properties of the CaCu3Ti4O12 ceramics are analyzed by dielectric spectrum, and the two relaxation processes are characterized by the dielectric modulus. The two relaxation processes are considered which are dominated by the electronic relaxation of deep bulk traps at the depletion layer edge. The low-frequency and high-frequency relaxation processes are attribu…查看全部>>
李盛涛†;王辉;林春江;李建英
西安交通大学，电力设备电气绝缘国家重点实验室，西安 710049西安交通大学，电力设备电气绝缘国家重点实验室，西安 710049西安交通大学，电力设备电气绝缘国家重点实验室，西安 710049西安交通大学，电力设备电气绝缘国家重点实验室，西安 710049
CaCu3Ti4O12陶瓷模量松弛过程电导
CaCu3Ti4O12 ceramicsdielectric modulusrelaxation polarizationconductivity
《物理学报》 2013 (8)
1-6,6
高等学校博士学科点专项科研基金(博导类)(批准号:20110185110014)和中央高校基本科研业务费(批准号:E022050205)资助的课题.*Project supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No.20110185110014) and the Fundamental Research Fund for the Central Universities, China (Grant No. E022050205)
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