Abstract
A phenomenological model of magnetic nanoparticle composites consisting of ideal lossless particles with identical properties embedded in a non-magnetic matrix has been developed. The input material parameter for this model include the saturation magnetization (Ms) and the crystal anisotropy field (Hk) of the particles. The relationships between key magnetic properties like the low frequency effective permeability and the FMR frequency, and the material and physical attributes (such as shape, volume fraction, and packing type) of the particles have been identified using an iterative extension of the Bruggeman effective medium theory.
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