Micromagnetic simulation for antiferro-magnetically coupled recording media

C. H. Hee; J. P. Wang; T. C. Chong

doi:10.1109/20.950887

Micromagnetic simulation for antiferro-magnetically coupled recording media

C. H. Hee, J. P. Wang, T. C. Chong

Electrical and Computer Engineering

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

4 Scopus citations

Abstract

Hysteresis properties of the antiferromagnetic coupled recording film media is studied via micromagnetic simulation. The theoretical model is discussed in detail in this paper. The effect of the antiferromagnetic coupling constant J on the hysteresis loop and recording performance is reported here. Kink is observed in the hysteresis loop due to the reversal of lower layer magnetization. The kink occurs in the positive field region when |J| > 2K_u,2t₂ (under zero temperature environment). The coercivity increased with the increase of the antiferromagnetic coupling constant. Antiferromagnetically coupled media with kink in positive field region shows a smaller transition length and noise. The track edge-noise increased and broadened for AFC media with kink in the negative field region.

Original language	English (US)
Pages (from-to)	1515-1517
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	37
Issue number	4 I
DOIs	https://doi.org/10.1109/20.950887
State	Published - Jul 2001
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
Micromagnetic simulation
Recording media
Recording performance

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10.1109/20.950887

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title = "Micromagnetic simulation for antiferro-magnetically coupled recording media",

abstract = "Hysteresis properties of the antiferromagnetic coupled recording film media is studied via micromagnetic simulation. The theoretical model is discussed in detail in this paper. The effect of the antiferromagnetic coupling constant J on the hysteresis loop and recording performance is reported here. Kink is observed in the hysteresis loop due to the reversal of lower layer magnetization. The kink occurs in the positive field region when |J| > 2Ku,2t2 (under zero temperature environment). The coercivity increased with the increase of the antiferromagnetic coupling constant. Antiferromagnetically coupled media with kink in positive field region shows a smaller transition length and noise. The track edge-noise increased and broadened for AFC media with kink in the negative field region.",

keywords = "Antiferromagnetic coupling, Micromagnetic simulation, Recording media, Recording performance",

author = "Hee, {C. H.} and Wang, {J. P.} and Chong, {T. C.}",

year = "2001",

month = jul,

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issn = "0018-9464",

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

number = "4 I",

note = "8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) ; Conference date: 07-01-2001 Through 11-01-2001",

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TY - JOUR

T1 - Micromagnetic simulation for antiferro-magnetically coupled recording media

AU - Hee, C. H.

AU - Wang, J. P.

AU - Chong, T. C.

PY - 2001/7

Y1 - 2001/7

N2 - Hysteresis properties of the antiferromagnetic coupled recording film media is studied via micromagnetic simulation. The theoretical model is discussed in detail in this paper. The effect of the antiferromagnetic coupling constant J on the hysteresis loop and recording performance is reported here. Kink is observed in the hysteresis loop due to the reversal of lower layer magnetization. The kink occurs in the positive field region when |J| > 2Ku,2t2 (under zero temperature environment). The coercivity increased with the increase of the antiferromagnetic coupling constant. Antiferromagnetically coupled media with kink in positive field region shows a smaller transition length and noise. The track edge-noise increased and broadened for AFC media with kink in the negative field region.

AB - Hysteresis properties of the antiferromagnetic coupled recording film media is studied via micromagnetic simulation. The theoretical model is discussed in detail in this paper. The effect of the antiferromagnetic coupling constant J on the hysteresis loop and recording performance is reported here. Kink is observed in the hysteresis loop due to the reversal of lower layer magnetization. The kink occurs in the positive field region when |J| > 2Ku,2t2 (under zero temperature environment). The coercivity increased with the increase of the antiferromagnetic coupling constant. Antiferromagnetically coupled media with kink in positive field region shows a smaller transition length and noise. The track edge-noise increased and broadened for AFC media with kink in the negative field region.

KW - Antiferromagnetic coupling

KW - Micromagnetic simulation

KW - Recording media

KW - Recording performance

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DO - 10.1109/20.950887

M3 - Conference article

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EP - 1517

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

SN - 0018-9464

IS - 4 I

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

Y2 - 7 January 2001 through 11 January 2001

ER -

Micromagnetic simulation for antiferro-magnetically coupled recording media

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Keywords

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