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物理学报. 2009, 58(6): 4219-4224.
doi: 10.7498/aps.58.4219.
利用普适介电理论对银/氧化锌复合材料介电性能的研究
- 收稿日期: 2008-01-27
- 修回日期: 2008-04-10
- 刊出日期: 2009-03-05
English Abstract
Study of Ag/ZnO composite material by universal power law
- Received Date:
27 January 2008
- Accepted Date:
10 April 2008
- Published Online:
05 March 2009
Abstract: The dielectric properties of Ag/ZnO composite material are investigated and a strong low-frequency dispersion phenomenon is found. The experimental results are systematically studied in the frequency range of 0.1—107 Hz and in the temperature range of 173—473 K. By means of normalization of conductivity, it is found that samples with different Ag contents show similar mechanism of dielectric loss, which is suggested as electron jumping between deep levels. In addition, it is also found that the dependence of E1mA on Ag content is similar to that of αlf on Ag content, which is a novel result in the research of varistor materials. The results can be fully understood by means of universal power law.
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Keywords:
- universal power law /
- dielectric property /
- ZnO
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