Abstract
J. K. Galt has recently suggested a mechanism for the losses observed in ferromagnetic resonance and domain wall motion in single crystals of nickel ferrite containing small amounts of divalent iron substituted for divalent nickel. Each such substitution provides one electron able to move between the various octahedral sites in the crystal. Galt's suggestion is that the losses arise from a relaxation associated with the motion of these electrons. This paper develops a theory of this mechanism based on a thermodynamic model. Expressions are found for the velocity of domain wall motion, for the line width in ferromagnetic resonance and for the displacement of the field for resonance.
Published Version
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