Dielectric mixtures with arbitrarily anisotropic components: focus on special gyrotropic effects
作者:
A.H. Sihvola,
O.P.M. Pekonen,
期刊:
Journal of Electromagnetic Waves and Applications
(Taylor Available online 1994)
卷期:
Volume 8,
issue 12
页码: 1605-1624
ISSN:0920-5071
年代: 1994
DOI:10.1163/156939394X00425
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
This report studies the dielectric properties of mixtures with components that can have an arbitrary permittivity dyadic. The anisotropic inclusions are assumed to be spherical. In the analysis, a quasistatic approach is used, and it leads to the general Maxwell Garnett formula. This is represented in many forms, and depending on the orientation distribution of the inclusions, the effective permittivity can be dyadic or scalar. Special emphasis is on the case of random orientation of the inclusions. The macroscopic permittivity depends on seven parameters of the mixture, six coming from the symmetric and antisymmetric parts of the inclusion permittivity dyadic, and one from the volume fraction. Numerical illustrations focus on the gyrotropy effects that are shown to lead to sharp maxima and minima in the polarizabilities and macroscopic permittivities.
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