Abstract
The static demagnetization energies as well as the Polder permeability tensors of uniformly magnetized spheroidal particles arranged periodically in three-dimensional lattices have been calculated. The energy is calculated as a function of aspect ratios, packing densities, and local coordinations: simple-cubic, body-centered-cubic, and face-centered-cubic lattices. The demagnetizing energy is expressed in terms of three demagnetizing factors, Nx, Ny, and Nz. We find that Nx, Ny, and Nz are well behaved for packing densities reaching the percolation limit. The Polder permeability tensor of the composite is derived in terms of these three demagnetizing factors and as a function of the particle's aspect ratio and packing density. The magnetic particle may be assumed to be magnetically saturated or nonsaturated.
Keywords
demagnetization, demagnetizing factors, Polder permeability tensors, spheroidal magnetic particles, cubic lattices, three dimensional lattices, aspect ratios, packing densities, local coordinations
Subject Categories
Magnetic permeability
Disciplines
Electromagnetics and photonics
Publisher
American Physical Society
Publication Date
4-1-1991
Rights Information
Copyright 1991 American Physical Society
Rights Holder
American Physical Society
Permanent URL
Recommended Citation
How, H. and Vittoria, C., "Demagnetization energy and magnetic-permeability tensor of spheroidal magnetic particles dispersed in cubic lattices" (1991). Electrical and Computer Engineering Faculty Publications. Paper 32. http://hdl.handle.net/2047/d20002202
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Notes
Originally published in Physical Review B 43, 8094-8104 (1991). doi 10.1103/PhysRevB43.8094 (http://link.aps.org/doi/10.1103/PhysRevB43.8094).