Impact of magnetic interactions on thermal stability of longitudinal thin film media

Author

Shi, Rick C. ; Zhu, Jian-Gang

Author_Institution

Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

1554

Lastpage

1557

Abstract

A statistic model for an interacting system has been developed to study the thermal stability of the longitudinal thin film media. It has been found that the magnetic interactions in the media have significant impact on the thermal assisted magnetization decay process. The decay rate increases as interactions become stronger. However, exchange coupling delays the onset time for fast decay, thereby improving the media thermal stability. The effects of media orientation and grain size distribution have also been investigated

Keywords

exchange interactions (electron); grain size; magnetic recording; magnetic thin films; magnetisation; thermal stability; decay rate; exchange coupling; grain size distribution; interacting system; longitudinal thin film media; magnetic interactions; media orientation; media thermal stability; statistic model; thermal assisted magnetization decay process; thermal stability; Energy barrier; Grain size; Magnetic anisotropy; Magnetic domains; Magnetic films; Magnetic separation; Magnetic switching; Perpendicular magnetic anisotropy; Saturation magnetization; Thermal stability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.950898

Filename

950898