Effect of Applied Magnetic Field Angle and Intensity on Magnetic Cluster State of Stacked Perpendicular Recording Media

Shohei SATO; Yoshiaki YAMAGUCHI; Ryuji SUGITA

doi:10.1587/transele.E96.C.1479

Effect of Applied Magnetic Field Angle and Intensity on Magnetic Cluster State of Stacked Perpendicular Recording Media

Shohei SATO, Yoshiaki YAMAGUCHI, Ryuji SUGITA

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The uniform magnetic field of various strength was applied to the perpendicularly and in-plane demagnetized media, and the change in each magnetic cluster state was investigated as the fundamental investigation of the influence of demagnetization method on noise during signal recording on the stacked perpendicular recording media. The results showed that the in-plane demagnetization can achieve lower noise level if the recording field is not very high. In other words, the in-plane demagnetization is an effective way to achieve lower noise in transition area, near track edge of recorded bit, and in high-density bit. In addition, the simulation clarified that this noise reduction can be explained using the idea of sub-domain structure in the in-plane demagnetized media.

Publication: IEICE TRANSACTIONS on Electronics Vol.E96-C No.12 pp.1479-1483

Publication Date: 2013/12/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1587/transele.E96.C.1479

Type of Manuscript: Special Section PAPER (Special Section on Advanced Elementary Technologies for Information Storage)

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Authors

Shohei SATO
  Ibaraki Univ.
Yoshiaki YAMAGUCHI
  Ibaraki Univ.
Ryuji SUGITA
  Ibaraki Univ.

Keyword

stacked perpendicular recording media, media noise, in-plane demagnetization, magnetic cluster, domain

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Shohei SATO, Yoshiaki YAMAGUCHI, Ryuji SUGITA, "Effect of Applied Magnetic Field Angle and Intensity on Magnetic Cluster State of Stacked Perpendicular Recording Media" in IEICE TRANSACTIONS on Electronics, vol. E96-C, no. 12, pp. 1479-1483, December 2013, doi: 10.1587/transele.E96.C.1479.
Abstract: The uniform magnetic field of various strength was applied to the perpendicularly and in-plane demagnetized media, and the change in each magnetic cluster state was investigated as the fundamental investigation of the influence of demagnetization method on noise during signal recording on the stacked perpendicular recording media. The results showed that the in-plane demagnetization can achieve lower noise level if the recording field is not very high. In other words, the in-plane demagnetization is an effective way to achieve lower noise in transition area, near track edge of recorded bit, and in high-density bit. In addition, the simulation clarified that this noise reduction can be explained using the idea of sub-domain structure in the in-plane demagnetized media.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/transele.E96.C.1479/_p

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@ARTICLE{e96-c_12_1479,
author={Shohei SATO, Yoshiaki YAMAGUCHI, Ryuji SUGITA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Effect of Applied Magnetic Field Angle and Intensity on Magnetic Cluster State of Stacked Perpendicular Recording Media},
year={2013},
volume={E96-C},
number={12},
pages={1479-1483},
abstract={The uniform magnetic field of various strength was applied to the perpendicularly and in-plane demagnetized media, and the change in each magnetic cluster state was investigated as the fundamental investigation of the influence of demagnetization method on noise during signal recording on the stacked perpendicular recording media. The results showed that the in-plane demagnetization can achieve lower noise level if the recording field is not very high. In other words, the in-plane demagnetization is an effective way to achieve lower noise in transition area, near track edge of recorded bit, and in high-density bit. In addition, the simulation clarified that this noise reduction can be explained using the idea of sub-domain structure in the in-plane demagnetized media.},
keywords={},
doi={10.1587/transele.E96.C.1479},
ISSN={1745-1353},
month={December},}

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TY - JOUR
TI - Effect of Applied Magnetic Field Angle and Intensity on Magnetic Cluster State of Stacked Perpendicular Recording Media
T2 - IEICE TRANSACTIONS on Electronics
SP - 1479
EP - 1483
AU - Shohei SATO
AU - Yoshiaki YAMAGUCHI
AU - Ryuji SUGITA
PY - 2013
DO - 10.1587/transele.E96.C.1479
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E96-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2013
AB - The uniform magnetic field of various strength was applied to the perpendicularly and in-plane demagnetized media, and the change in each magnetic cluster state was investigated as the fundamental investigation of the influence of demagnetization method on noise during signal recording on the stacked perpendicular recording media. The results showed that the in-plane demagnetization can achieve lower noise level if the recording field is not very high. In other words, the in-plane demagnetization is an effective way to achieve lower noise in transition area, near track edge of recorded bit, and in high-density bit. In addition, the simulation clarified that this noise reduction can be explained using the idea of sub-domain structure in the in-plane demagnetized media.
ER -