Title :
Micro-magnetic simulation of magnetic cluster, thermal activation volume, and media noise in perpendicular recording media
Author :
Igarashi, M. ; Hara, M. ; Nakamura, A. ; Sugita, Y.
Author_Institution :
Central Res. Lab., Hitachi Ltd., Tokyo, Japan
Abstract :
As the recording density of hard-disk drives increases, it becomes more important to suppress media noise, which is deeply related to magnetic cluster. In this study, the magnetic cluster, thermal activation volume and the media noise in perpendicular recording media have been analyzed by using micro-magnetic simulation, and compared with data for longitudinal recording media.
Keywords :
disc drives; hard discs; magnetic recording noise; micromagnetics; perpendicular magnetic recording; hard-disk drives; magnetic cluster; media noise; micro-magnetic simulation; perpendicular recording media; thermal activation volume; Analytical models; Demagnetization; Gaussian distribution; Hard disks; Magnetic analysis; Magnetic anisotropy; Magnetic noise; Perpendicular magnetic anisotropy; Perpendicular magnetic recording;
Conference_Titel :
Joint NAPMRC 2003. Digest of Technical Papers [Perpendicular Magnetic Recording Conference]
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-7746-X
DOI :
10.1109/NAPMRC.2003.1177017
