Optimum design rule of hysteresis loop for ultrahigh density recording in single-layered perpendicular media

Kyoung Jin Lee; Y. H. Im; N. Y. Park; T. D. Lee

doi:10.1109/20.996207

Optimum design rule of hysteresis loop for ultrahigh density recording in single-layered perpendicular media

Kyoung Jin Lee, Y. H. Im, N. Y. Park, T. D. Lee

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

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
Pages (from-to)	801-804
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	38
Issue number	2 I
DOIs	https://doi.org/10.1109/20.996207
Publication status	Published - 2002 Mar

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

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10.1109/20.996207

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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.",

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AB - 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.

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KW - Micromagnetic calculation

KW - Perpendicular recording media

KW - Signal-to-noise ratio (SNR)

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Optimum design rule of hysteresis loop for ultrahigh density recording in single-layered perpendicular media

Abstract

Keywords

ASJC Scopus subject areas

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