Magnetization process and thermal stability in longitudinal magnetic recording media with a stabilizing layer

Rachid Sbiaa; Ehsan Ahmad; Takao Suzuki; E. Noel Abarra

doi:10.1109/20.950877

Magnetization process and thermal stability in longitudinal magnetic recording media with a stabilizing layer

Rachid Sbiaa^*, Ehsan Ahmad, Takao Suzuki, E. Noel Abarra

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

The thermal stability in exchange coupled CoPtCrB trilayer structure medium (TL) is discussed and compared to that for the corresponding single layer (SL) medium. The time dependence of magnetization shows a nonlinear behavior. The magnetization decay rate is found to be reduced in TL when the applied field is close to the coercivity. The DC demagnetization (DCD) reversal mechanisms are investigated by magnetic force microscopy. It is observed that for the reversed field close to remanent coercivity of the TL and SL, very coarse magnetic structures appear.

Original language	English
Pages (from-to)	1481-1483
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	37
Issue number	4 I
DOIs	https://doi.org/10.1109/20.950877
Publication status	Published - Jul 2001
Externally published	Yes
Event	8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States Duration: Jan 7 2001 → Jan 11 2001

Keywords

Antiferromagnetic coupling
MFM observation
Magnetic recording
Magnetic viscosity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/20.950877

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title = "Magnetization process and thermal stability in longitudinal magnetic recording media with a stabilizing layer",

abstract = "The thermal stability in exchange coupled CoPtCrB trilayer structure medium (TL) is discussed and compared to that for the corresponding single layer (SL) medium. The time dependence of magnetization shows a nonlinear behavior. The magnetization decay rate is found to be reduced in TL when the applied field is close to the coercivity. The DC demagnetization (DCD) reversal mechanisms are investigated by magnetic force microscopy. It is observed that for the reversed field close to remanent coercivity of the TL and SL, very coarse magnetic structures appear.",

keywords = "Antiferromagnetic coupling, MFM observation, Magnetic recording, Magnetic viscosity",

author = "Rachid Sbiaa and Ehsan Ahmad and Takao Suzuki and Abarra, {E. Noel}",

note = "Funding Information: Manuscript received October 16, 2000. This work was supported in part by the Grant-in-Aid for Academic Frontier Center by the Japanese Ministry of Education, Science, Sports and Culture for the “Future Data Storage Materials Research Project.” R. Sbiaa, E. Ahmad, and T. Suzuki are with the Information Storage Materials Laboratory, Academic Frontier Center for Future Data Storage Materials Research, Ministry of Education, Toyota Technological Institute, Hisakata, Tem-paku-ku, Nagoya 468-8511, Japan (e-mail: {sbiaa; ahmad; tsuzuki}@toyota-ti.ac.jp). E. N. Abarra is with the Fujitsu Limited, 10-1 Morinosato-Wakamiya, Atsugi 243-0197, Japan (e-mail:noel@jp.fujitsu.com). Publisher Item Identifier S 0018-9464(01)05799-5.; 8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) ; Conference date: 07-01-2001 Through 11-01-2001",

year = "2001",

month = jul,

doi = "10.1109/20.950877",

language = "English",

volume = "37",

pages = "1481--1483",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "4 I",

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T1 - Magnetization process and thermal stability in longitudinal magnetic recording media with a stabilizing layer

AU - Sbiaa, Rachid

AU - Ahmad, Ehsan

AU - Suzuki, Takao

AU - Abarra, E. Noel

N1 - Funding Information: Manuscript received October 16, 2000. This work was supported in part by the Grant-in-Aid for Academic Frontier Center by the Japanese Ministry of Education, Science, Sports and Culture for the “Future Data Storage Materials Research Project.” R. Sbiaa, E. Ahmad, and T. Suzuki are with the Information Storage Materials Laboratory, Academic Frontier Center for Future Data Storage Materials Research, Ministry of Education, Toyota Technological Institute, Hisakata, Tem-paku-ku, Nagoya 468-8511, Japan (e-mail: {sbiaa; ahmad; tsuzuki}@toyota-ti.ac.jp). E. N. Abarra is with the Fujitsu Limited, 10-1 Morinosato-Wakamiya, Atsugi 243-0197, Japan (e-mail:noel@jp.fujitsu.com). Publisher Item Identifier S 0018-9464(01)05799-5.

PY - 2001/7

Y1 - 2001/7

N2 - The thermal stability in exchange coupled CoPtCrB trilayer structure medium (TL) is discussed and compared to that for the corresponding single layer (SL) medium. The time dependence of magnetization shows a nonlinear behavior. The magnetization decay rate is found to be reduced in TL when the applied field is close to the coercivity. The DC demagnetization (DCD) reversal mechanisms are investigated by magnetic force microscopy. It is observed that for the reversed field close to remanent coercivity of the TL and SL, very coarse magnetic structures appear.

AB - The thermal stability in exchange coupled CoPtCrB trilayer structure medium (TL) is discussed and compared to that for the corresponding single layer (SL) medium. The time dependence of magnetization shows a nonlinear behavior. The magnetization decay rate is found to be reduced in TL when the applied field is close to the coercivity. The DC demagnetization (DCD) reversal mechanisms are investigated by magnetic force microscopy. It is observed that for the reversed field close to remanent coercivity of the TL and SL, very coarse magnetic structures appear.

KW - Antiferromagnetic coupling

KW - MFM observation

KW - Magnetic recording

KW - Magnetic viscosity

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SN - 0018-9464

VL - 37

SP - 1481

EP - 1483

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 4 I

T2 - 8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag)

Y2 - 7 January 2001 through 11 January 2001

ER -

Magnetization process and thermal stability in longitudinal magnetic recording media with a stabilizing layer

Abstract

Keywords

ASJC Scopus subject areas

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