Dielectric properties of nanophase Ag2HgI4 and Ag2HgI4-Al2O3 nanocomposites

被引：0
作者：
S. Sankara Narayanan Potty
M. Abdul Khadar
机构：
[1] University of Kerala,Department of Physics
[2] Centre for Materials for Electronics Technology,undefined
来源：
Bulletin of Materials Science | 2000年 / 23卷
关键词：
Nanophase materials; nanocomposites; dielectric properties;
D O I：
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学科分类号：
摘要：
The dielectric properties of nanophase Ag2HgI4 and Ag2HgI4-Al2O3 nanocomposites at different frequencies have been studied over a temperature range covering the stability range of β phase of Ag2HgI4 and beyond the β to a phase transition temperature. έ′, tan δ and σa.c. of nanophase Ag2HgI4 and Ag2HgI4-Al2O3 nanocomposites were found to be larger than the reported values for polycrystalline pellets of Ag2HgI4. The dielectric properties of the nanocomposites were found to be a function of the wt.% of nano alumina. The observed changes are attributed to the grain boundary properties of nanophase materials and to the microsize space charge effects.
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页码：361 / 367
页数：6
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