Abstract
The complex diagonal and off-diagonal components of the effective permeability tensor were calculated for the case of a realistic 3D opal, infiltrated with Ni0.7Zn0.3Fe2O4 nanoparticles. First, an accurate electrodynamic effective medium permeability tensor approach is formulated. Next, Maxwell`s equations were solved rigorously for the case of an interacting systems of ferrite particles in the opal matrix, having a normal distribution of the ferromagnetic resonance fields. The method is demonstrated by calculating the bias field dependence of the components of the complex permeability tensor at 26 GHz, and a good agreement with recent experimental data was obtained.
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