Fast switching in single-domain particles with uniaxial quartic anisotropy

The effect of quartic anisotropy on angular dependence of the high-speed switching behavior for uniaxial particles is studied. For large applied field angles with respect to the anisotropy axis, the magnetization reversal is dominated by the precessional switching and the switching speed is very fas...

Full description

Saved in:
Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2005-02, Vol.287, p.303-307
Main Authors: Yang, Jyh-Shinn, Chang, Ching-Ray
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Fast switching
Magnetic properties and materials
Physics
Precessional switching
Quartic anisotropy
Tilted media
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effect of quartic anisotropy on angular dependence of the high-speed switching behavior for uniaxial particles is studied. For large applied field angles with respect to the anisotropy axis, the magnetization reversal is dominated by the precessional switching and the switching speed is very fast in the presence of quartic anisotropy. The quartic anisotropy enhances the switching fields moderately, and expands the precessional switching regime towards the anisotropy axis, while slightly increases the switching time for the applied field magnitude larger than the anisotropy field. The angular dependence of switching field exhibits a broad minimum around the field angle of 45° for large quartic anisotropy. The results have implications for improving the recording characteristics of the tilted media.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2004.10.049