巨介电常数钙钛矿陶瓷介电弛豫的平均场方法

IF 18.6 1区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of Advanced Ceramics Pub Date : 2013-09-25 DOI:10.1155/2013/795827

Shanming Ke, Peng Lin, Haitao Huang, H. Fan, Xierong Zeng

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引用次数: 11

摘要

研究了CaCu3Ti4O3 (CCTO)和A2FeNbO6 (AFN, A = Ba, Sr和Ca)巨型介电常数陶瓷在1 Hz ~ 10 MHz频率范围内的介电性能。极化子模型可以很好地描述介电介质的弛豫特性，表明介电介质弛豫与局域载流子引起的跳变运动密切相关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Mean-Field Approach to Dielectric Relaxation in Giant Dielectric Constant Perovskite Ceramics

The dielectric properties of CaCu3Ti4O3 (CCTO) and A2FeNbO6 (AFN, A = Ba, Sr, and Ca) giant dielectric constant ceramics were investigated in the frequency range from 1 Hz to 10 MHz. The relaxation properties can be perfectly described by a polaron model, indicating that the dielectric relaxation is intimately related to the hopping motion caused by localized charge carriers.

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来源期刊

Journal of Advanced Ceramics MATERIALS SCIENCE, CERAMICS-

CiteScore

21.00

自引率

10.70%

发文量

290

审稿时长

14 days

期刊介绍： Journal of Advanced Ceramics is a single-blind peer-reviewed, open access international journal published on behalf of the State Key Laboratory of New Ceramics and Fine Processing (Tsinghua University, China) and the Advanced Ceramics Division of the Chinese Ceramic Society. Journal of Advanced Ceramics provides a forum for publishing original research papers, rapid communications, and commissioned reviews relating to advanced ceramic materials in the forms of particulates, dense or porous bodies, thin/thick films or coatings and laminated, graded and composite structures.