Detection of Anisotropy in the Reversible Transverse Susceptibility
Journal
Applied Physics Letters
Journal Volume
65
Journal Issue
4
Pages
496-498
Date Issued
1994
Author(s)
Yang, Js
Abstract
A model of reversible transverse susceptibility is proposed. It is based on the Stoner–Wohlfarth coherent rotation model, but with a macroscopic mean field interaction included to represent mutual interaction between particles. Unlike previous predictions, our calculated results show that the determination of the magnetic anisotropy field strength by means of the location of the peak in the transverse susceptibility curve works only in a weakly interacting particle system. For a strongly correlated system, nucleation does not start at the anisotropy field; therefore, it can be concluded that the peak detection method of anisotropy in transverse susceptibility should fail in this system.
Type
journal article