A simple analysis for magnetic behaviors of exchange-coupled granular/continuous perpendicular magnetic recording media

Osamu Kitakami; Takehito Shimatsu; Hiroaki Muraoka

doi:10.1143/jjap.41.l455

A simple analysis for magnetic behaviors of exchange-coupled granular/continuous perpendicular magnetic recording media

Osamu Kitakami, Takehito Shimatsu, Hiroaki Muraoka

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

1 Citation (Scopus)

Abstract

We present a simple analysis for magnetic behaviors of exchange-coupled granular/continuous (CGC) perpendicular magnetic recording media. The analysis shows how the CGC media behave against a vertical external field. The slope of the magnetization curves is governed by the thickness ratio (γ) of a continuous layer t_c to a granular layer t_g and the domain wall energy σ_w of the continuous layer. The size of a magnetization reversal unit which would dominate the recording resolution and thermal stability can be easily evaluated by the present analysis.

Original language	English
Pages (from-to)	L455-L457
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	41
Issue number	4
DOIs	https://doi.org/10.1143/jjap.41.l455
Publication status	Published - 2002 Apr 15

Keywords

Coupled granular/continuous film
Magnetization reversal unit
Perpendicular magnetic recording
Shearing

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy (miscellaneous)
Physics and Astronomy(all)

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abstract = "We present a simple analysis for magnetic behaviors of exchange-coupled granular/continuous (CGC) perpendicular magnetic recording media. The analysis shows how the CGC media behave against a vertical external field. The slope of the magnetization curves is governed by the thickness ratio (γ) of a continuous layer tc to a granular layer tg and the domain wall energy σw of the continuous layer. The size of a magnetization reversal unit which would dominate the recording resolution and thermal stability can be easily evaluated by the present analysis.",

keywords = "Coupled granular/continuous film, Magnetization reversal unit, Perpendicular magnetic recording, Shearing",

author = "Osamu Kitakami and Takehito Shimatsu and Hiroaki Muraoka",

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language = "English",

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T1 - A simple analysis for magnetic behaviors of exchange-coupled granular/continuous perpendicular magnetic recording media

AU - Kitakami, Osamu

AU - Shimatsu, Takehito

AU - Muraoka, Hiroaki

PY - 2002/4/15

Y1 - 2002/4/15

N2 - We present a simple analysis for magnetic behaviors of exchange-coupled granular/continuous (CGC) perpendicular magnetic recording media. The analysis shows how the CGC media behave against a vertical external field. The slope of the magnetization curves is governed by the thickness ratio (γ) of a continuous layer tc to a granular layer tg and the domain wall energy σw of the continuous layer. The size of a magnetization reversal unit which would dominate the recording resolution and thermal stability can be easily evaluated by the present analysis.

AB - We present a simple analysis for magnetic behaviors of exchange-coupled granular/continuous (CGC) perpendicular magnetic recording media. The analysis shows how the CGC media behave against a vertical external field. The slope of the magnetization curves is governed by the thickness ratio (γ) of a continuous layer tc to a granular layer tg and the domain wall energy σw of the continuous layer. The size of a magnetization reversal unit which would dominate the recording resolution and thermal stability can be easily evaluated by the present analysis.

KW - Coupled granular/continuous film

KW - Magnetization reversal unit

KW - Perpendicular magnetic recording

KW - Shearing

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JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 4

ER -

A simple analysis for magnetic behaviors of exchange-coupled granular/continuous perpendicular magnetic recording media

Abstract

Keywords

ASJC Scopus subject areas

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