DocumentCode
1384602
Title
Switching speed of longitudinal thin film recording media
Author
Fang, Hao ; Zhu, Jian-Gang
Author_Institution
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
Volume
32
Issue
5
fYear
1996
fDate
9/1/1996 12:00:00 AM
Firstpage
3584
Lastpage
3586
Abstract
Switching speed of longitudinal thin film recording media was studied using micromagnetic modeling. The dependence of the switching speed on the damping constant α was investigated. It is shown that when α is small (=0.01), even with instantaneously rising head field, the medium switching time can be as large as 2 ns, which is slow enough to have a significant impact to the high frequency recording. Nonzero head field risetime can significantly decrease the medium switching speed. The impact of finite medium switching speed and nonzero head field risetime on recording performance is estimated
Keywords
magnetic recording; magnetic switching; magnetic thin film devices; damping constant; head field risetime; high frequency recording; longitudinal thin film recording media; micromagnetic model; switching speed; Damping; Degradation; Disk recording; Frequency; Gyromagnetism; Magnetic heads; Magnetization; Micromagnetics; Performance analysis; Transistors;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.538697
Filename
538697
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