期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 94, 期 1, 页码 58-63出版社
WILEY
DOI: 10.1111/j.1551-2916.2010.04058.x
关键词
-
资金
- Center for Dielectric Studies at the Pennsylvania State University
- National Security Science and Engineering Faculty
First-order reversal curve (FORC) distributions as well as the ac field dependence of the dielectric permittivity were investigated for model BaTiO3-based multilayer ceramic capacitors in which the dielectric grain size was varied from 0.28 to 0.39 mu m. It was found that as the grain size decreased, the high-field dielectric permittivity, the peak in the irreversible FORC distribution at origin, and the reversible FORC distribution at zero bias decreased. The reversible FORC distribution of all the parts converged at high biases, indicating that the grain size dependence was influenced by domain wall contributions. Dielectric contributions from the core and shell were estimated based on the temperature dependence of the permittivity. Not unexpectedly, the relative response of the core decreased while that of the shell increased as the grain size decreased. A Preisach model using the measured FORC distribution gave a good fit to the experimental polarization-electric field loops.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据