Prediction of Electromagnetic Properties of MnZn Ferrite-Silicone Rubber Composites in Wide Frequency Range

概要

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A method for calculating effective complex permittivity and permeability was proposed, and the reflection loss in a resonant absorber of two-phase ferrite composites was calculated using the effective medium theory incorporating the invariant the Debye-Hertz potential in the scattering of the Bruggeman effective mediurn structure. The validity of this approach was investigated for MnZn ferrite-silicone rubber composites with ferrite volume fractions varying from 0.1 to 0.4 in the frequency range between 45 MHz and 10 GHz. The agreement between the results calculated using the effective medium theory and the experimental results is excellent, which indicates that the frequency dependence of the electromagnetic properties and the reflection loss of ferrite composites can be predicted.
社団法人応用物理学会の論文
1996-06-15