Anti-ferromagnetic coupling effects on energy barrier and reversal properties of recording media

J. P. Wang; Z. S. Shan; S. N. Piramanayagam; T. C. Chong

doi:10.1109/20.950866

Anti-ferromagnetic coupling effects on energy barrier and reversal properties of recording media

J. P. Wang, Z. S. Shan, S. N. Piramanayagam, T. C. Chong

Electrical and Computer Engineering

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

30 Scopus citations

Abstract

Analytical solutions for coercivity H_CM1, H_CM2, effective (Mrt)_eff, energy-harrier and effective thermal stability factor as a function of coupling constant J and other film parameters have been derived for two coupled ferromagnetic layers (FM-FM layer) with different magnetic properties for the first time. The condition for reduced effective (Mrt)_eff is analyzed. These results are valuable for laminated antiferromagnetically coupled media design. This may open up a channel to raise thermal stability significantly while maintaining lower noise for longitudinal recording media.

Original language	English (US)
Pages (from-to)	1445-1448
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	37
Issue number	4 I
DOIs	https://doi.org/10.1109/20.950866
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

Antiferromagnetically coupled film
Energy barrier
Magnetic recording media
Thermal stability

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10.1109/20.950866

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title = "Anti-ferromagnetic coupling effects on energy barrier and reversal properties of recording media",

abstract = "Analytical solutions for coercivity HCM1, HCM2, effective (Mrt)eff, energy-harrier and effective thermal stability factor as a function of coupling constant J and other film parameters have been derived for two coupled ferromagnetic layers (FM-FM layer) with different magnetic properties for the first time. The condition for reduced effective (Mrt)eff is analyzed. These results are valuable for laminated antiferromagnetically coupled media design. This may open up a channel to raise thermal stability significantly while maintaining lower noise for longitudinal recording media.",

keywords = "Antiferromagnetically coupled film, Energy barrier, Magnetic recording media, Thermal stability",

author = "Wang, {J. P.} and Shan, {Z. S.} and Piramanayagam, {S. N.} and Chong, {T. C.}",

year = "2001",

month = jul,

doi = "10.1109/20.950866",

language = "English (US)",

volume = "37",

pages = "1445--1448",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

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

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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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T1 - Anti-ferromagnetic coupling effects on energy barrier and reversal properties of recording media

AU - Wang, J. P.

AU - Shan, Z. S.

AU - Piramanayagam, S. N.

AU - Chong, T. C.

PY - 2001/7

Y1 - 2001/7

N2 - Analytical solutions for coercivity HCM1, HCM2, effective (Mrt)eff, energy-harrier and effective thermal stability factor as a function of coupling constant J and other film parameters have been derived for two coupled ferromagnetic layers (FM-FM layer) with different magnetic properties for the first time. The condition for reduced effective (Mrt)eff is analyzed. These results are valuable for laminated antiferromagnetically coupled media design. This may open up a channel to raise thermal stability significantly while maintaining lower noise for longitudinal recording media.

AB - Analytical solutions for coercivity HCM1, HCM2, effective (Mrt)eff, energy-harrier and effective thermal stability factor as a function of coupling constant J and other film parameters have been derived for two coupled ferromagnetic layers (FM-FM layer) with different magnetic properties for the first time. The condition for reduced effective (Mrt)eff is analyzed. These results are valuable for laminated antiferromagnetically coupled media design. This may open up a channel to raise thermal stability significantly while maintaining lower noise for longitudinal recording media.

KW - Antiferromagnetically coupled film

KW - Energy barrier

KW - Magnetic recording media

KW - Thermal stability

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DO - 10.1109/20.950866

M3 - Conference article

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VL - 37

SP - 1445

EP - 1448

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 -

Anti-ferromagnetic coupling effects on energy barrier and reversal properties of recording media

Abstract

Keywords

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