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

Physics

Research output: Contribution to journal › 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

Keywords

Antiferromagnetic coupling
Magnetic recording
Magnetic viscosity
MFM observation

ASJC Scopus subject areas

Electrical and Electronic Engineering
Physics and Astronomy (miscellaneous)

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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, Magnetic recording, Magnetic viscosity, MFM observation",

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AU - Sbiaa, Rachid

AU - Ahmad, Ehsan

AU - Suzuki, Takao

AU - Abarra, E. Noel

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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 - Magnetic recording

KW - Magnetic viscosity

KW - MFM observation

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