Effective Demagnetizing Factors of Complicated Particle Mixtures

Authors

Ralph Skomski, University of Nebraska at LincolnFollow
George C. Hadjipanayis, University of Nebraska-LincolnFollow
David J. Sellmyer, University of Nebraska-LincolnFollow

Date of this Version

6-2007

Comments

Published in IEEE TRANSACTIONS ON MAGNETICS, VOL. 43, NO. 6, JUNE 2007. Copyright © 2007 IEEE. Used by permission.

Abstract

Demagnetizing factors have been calculated for hierarchical mixtures and dispersions of magnetic particles, such as columns of platelike particles in a matrix and clusters of spherical particles. The theory involves a number of shape and density parameters describing particles, aggregates, and matrix. It approximates distant particles by a homogeneous medium and yields closed and easy-to-use expressions for the effective demagnetizing factor.