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.
Original language | English |
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Pages (from-to) | 801-804 |
Number of pages | 4 |
Journal | IEEE Transactions on Magnetics |
Volume | 38 |
Issue number | 2 I |
DOIs | |
Publication status | Published - 2002 Mar |
Externally published | Yes |
Keywords
- Hysteresis loop
- Micromagnetic calculation
- Perpendicular recording media
- Signal-to-noise ratio (SNR)
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering