DocumentCode
1262238
Title
Optimum writing field for high-frequency magnetic recording
Author
Igarashi, Masukazu ; Akagi, Fumiko ; Yoshida, Kazuetsu ; Nakamura, Atsushi ; Maruyama, Youji ; Takano, Hisashi
Author_Institution
Central Res. Lab., Hitachi Ltd., Tokyo, Japan
Volume
35
Issue
5
fYear
1999
fDate
9/1/1999 12:00:00 AM
Firstpage
2721
Lastpage
2723
Abstract
Realistic recording conditions in longitudinal thin-film media at high-frequency (up to 1 GHz) are investigated by a micromagnetic simulation. It is found that the recording frequency should be set below the characteristic frequency (1/2 Tr, where Tr is the rise time of the writing head); optimum writing field intensity must be increased by 1.2 Oe per MHz at a linear density of 244 kFCI; and remanence coercivity measured by a square pulse slightly increases up to 1 GHz when damping constant is 0.03
Keywords
coercive force; magnetic heads; magnetic recording; magnetic thin film devices; remanence; damping constant; high-frequency magnetic recording; linear density; longitudinal thin-film media; micromagnetic simulation; optimum writing field; recording conditions; remanence coercivity; rise time; square pulse; writing head; Coercive force; Density measurement; Frequency; Magnetic heads; Magnetic recording; Micromagnetics; Pulse measurements; Remanence; Transistors; Writing;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.800964
Filename
800964
Link To Document