DocumentCode :
1274542
Title :
Optimum design rule of hysteresis loop for ultrahigh density recording in single-layered perpendicular media
Author :
Lee, K.J. ; Im, Y.H. ; Park, N.Y. ; Lee, T.D.
Author_Institution :
Storage Lab., Samsung Adv. Inst. of Technol., Suwon, South Korea
Volume :
38
Issue :
2
fYear :
2002
fDate :
3/1/2002 12:00:00 AM
Firstpage :
801
Lastpage :
804
Abstract :
Micromagnetic studies have been performed to find optimum shape of hysteresis loop in a single-layered perpendicular medium for ultrahigh density recording. A good index that was inversely proportional to signal-to-noise ratio (SNR) was developed. By using this index, we found the optimum loop shape should have terms of the ratio of nucleation field to coercivity within -0.4 to -0.6, the loop slope within 2 to 4, and the ratio of grain thickness to grain diameter larger than 2.5
Keywords :
coercive force; grain size; magnetic hysteresis; magnetic recording noise; perpendicular magnetic recording; coercivity; grain size; hysteresis loop; micromagnetic model; nucleation field; optimum design rule; signal-to-noise ratio; single-layered perpendicular medium; ultrahigh density recording; Magnetic anisotropy; Magnetic films; Magnetic heads; Magnetic hysteresis; Magnetization; Micromagnetics; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Shape; Signal to noise ratio;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.996207
Filename :
996207
Link To Document :
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