Interfacial Effects on Curling Mode for a Coated Particle
Journal
IEEE Transactions on Magnetics
Journal Volume
29
Journal Issue
6
Pages
2640-2642
Date Issued
1993
Author(s)
Yang, Js
Abstract
A rigorous micromagnetic study for the nucleation by the magnetization curling mode in acicular coated particles is presented. The calculated nucleation field increases with shell thickness and saturates within observable thickness. It is found that the shell uniaxial anisotropy determines the initial slope, and that the saturation level depends on both the interfacial coupling and shell anisotropy. The shell surface anisotropy will further increase the nucleation field. A very good fitting of experimental data can be obtained by this method.>
Type
journal article