Title :
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
fDate :
7/1/2001 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
