Magnetism and magnetic anisotropy in FM NiFe, AFM NiMn, and their interface

K. Nakamura; M. Kim; A. J. Freeman; L. Zhong; J. Fernandez-de-Castro

doi:10.1109/20.908765

Magnetism and magnetic anisotropy in FM NiFe, AFM NiMn, and their interface

K. Nakamura^*, M. Kim, A. J. Freeman, L. Zhong, J. Fernandez-de-Castro

^*Corresponding author for this work

Physics and Astronomy

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

15 Scopus citations

Abstract

First-principles local density full-potential linearized augmented plane wave (FLAPW) calculations have been performed to investigate the magnetism and magnetic anisotropy in ferromagnetic NiFe, antiferromagnetic NiMn and their interface. We found that the magnetic moments of the Fe atom in NiFe and that of the Mn atom in NiMn are enhanced at their surface compared to their bulk states. The magneto-crystalline anisotropy (MCA) is also drastically influenced by the environment. Bulk NiFe and NiMn show slightly perpendicular and in-plane easy magnetic axes, respectively. However, the effects of the surface change their MCA direction and strength. For the interface between NiFe and NiMn, where the magneto-crystalline anisotropy is dominated by the NiMn layer, the interface effects may be important for discussing the exchanged bias.

Original language	English (US)
Pages (from-to)	3269-3271
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	36
Issue number	5 I
DOIs	https://doi.org/10.1109/20.908765
State	Published - Sep 2000
Event	2000 International Magnetics Conference (INTERMAG 2000) - Toronto, Ont, Canada Duration: Apr 9 2000 → Apr 12 2000

Keywords

Antiferromagnetic NiMn
Ferromagnetic NiFe
Ferromagnetic/antiferromagnetic interface
Magneto-crystalline anisotropy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/20.908765

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title = "Magnetism and magnetic anisotropy in FM NiFe, AFM NiMn, and their interface",

abstract = "First-principles local density full-potential linearized augmented plane wave (FLAPW) calculations have been performed to investigate the magnetism and magnetic anisotropy in ferromagnetic NiFe, antiferromagnetic NiMn and their interface. We found that the magnetic moments of the Fe atom in NiFe and that of the Mn atom in NiMn are enhanced at their surface compared to their bulk states. The magneto-crystalline anisotropy (MCA) is also drastically influenced by the environment. Bulk NiFe and NiMn show slightly perpendicular and in-plane easy magnetic axes, respectively. However, the effects of the surface change their MCA direction and strength. For the interface between NiFe and NiMn, where the magneto-crystalline anisotropy is dominated by the NiMn layer, the interface effects may be important for discussing the exchanged bias.",

keywords = "Antiferromagnetic NiMn, Ferromagnetic NiFe, Ferromagnetic/antiferromagnetic interface, Magneto-crystalline anisotropy",

author = "K. Nakamura and M. Kim and Freeman, {A. J.} and L. Zhong and J. Fernandez-de-Castro",

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T1 - Magnetism and magnetic anisotropy in FM NiFe, AFM NiMn, and their interface

AU - Nakamura, K.

AU - Kim, M.

AU - Freeman, A. J.

AU - Zhong, L.

AU - Fernandez-de-Castro, J.

PY - 2000/9

Y1 - 2000/9

N2 - First-principles local density full-potential linearized augmented plane wave (FLAPW) calculations have been performed to investigate the magnetism and magnetic anisotropy in ferromagnetic NiFe, antiferromagnetic NiMn and their interface. We found that the magnetic moments of the Fe atom in NiFe and that of the Mn atom in NiMn are enhanced at their surface compared to their bulk states. The magneto-crystalline anisotropy (MCA) is also drastically influenced by the environment. Bulk NiFe and NiMn show slightly perpendicular and in-plane easy magnetic axes, respectively. However, the effects of the surface change their MCA direction and strength. For the interface between NiFe and NiMn, where the magneto-crystalline anisotropy is dominated by the NiMn layer, the interface effects may be important for discussing the exchanged bias.

AB - First-principles local density full-potential linearized augmented plane wave (FLAPW) calculations have been performed to investigate the magnetism and magnetic anisotropy in ferromagnetic NiFe, antiferromagnetic NiMn and their interface. We found that the magnetic moments of the Fe atom in NiFe and that of the Mn atom in NiMn are enhanced at their surface compared to their bulk states. The magneto-crystalline anisotropy (MCA) is also drastically influenced by the environment. Bulk NiFe and NiMn show slightly perpendicular and in-plane easy magnetic axes, respectively. However, the effects of the surface change their MCA direction and strength. For the interface between NiFe and NiMn, where the magneto-crystalline anisotropy is dominated by the NiMn layer, the interface effects may be important for discussing the exchanged bias.

KW - Antiferromagnetic NiMn

KW - Ferromagnetic NiFe

KW - Ferromagnetic/antiferromagnetic interface

KW - Magneto-crystalline anisotropy

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DO - 10.1109/20.908765

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EP - 3271

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

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Y2 - 9 April 2000 through 12 April 2000

ER -

Magnetism and magnetic anisotropy in FM NiFe, AFM NiMn, and their interface

Abstract

Keywords

ASJC Scopus subject areas

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