Conduction and polarization mechanisms and trends in dielectrics

被引:140
作者
Dalkin, T. W. [1 ]
机构
[1] Westinghouse Res Labs, Pittsburgh, PA USA
关键词
conduction (ionic and dipolar); polarization electronic; atomic; dipolar; interfacial; dielectric constant; tangent delta; loss factor; model circuits; relaxation; Cole-Cole plots;
D O I
10.1109/MEI.2006.1705854
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A discussion was made about the theoretically deduced mechanisms for the magnitude and the trends of conduction and polarization in dielectrics with molecular and physical structure, frequency and temperature. Application of these mechanisms can aid in making estimates or rough predictions of conductivity and dielectric constant levels, and their variations, from an examination of the molecular/atomic composition of a material. It is outlined in the discussion that there are three types of conduction: electrical, ionic and dipolar. Meanwhile, polarization is responsible for the refractive index and dielectric constant of materials. There are four principle types of polarization: electron, ionic-interfacial, atomic-ionic displacement and dipolar.
引用
收藏
页码:11 / 28
页数:18
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