Exchange bias model in ferromagnetic/antiferromagnetic bilayer with L1 2-type ordered antiferromagnet

C. Mitsumata; A. Sakuma; K. Fukamichi

doi:10.1109/TMAG.2005.855223

Exchange bias model in ferromagnetic/antiferromagnetic bilayer with L1 ₂-type ordered antiferromagnet

C. Mitsumata, A. Sakuma, K. Fukamichi

ENG - Applied Physics

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

The exchange bias of the ferromagnetic (FM) and antiferromagnetic (AFM) bilayer having L1₂-type ordered structure has been investigated within the framework of Heisenberg model. The triangle lattice of magnetic atoms in the AFM layer realizes the triangular spin structure due to geometrical spin frustrations. This noncollinear spin structure can bring about an exchange bias in the FM/AFM bilayer system. Under the influence of the exchange bias, the uncompensated spin element appears in the AFM layer, resulting in a shifted loop in magnetization curves, in accord with the measured loop by X-ray magnetic circular dichroism spectroscopy for an AFM layer.

Original language	English
Pages (from-to)	2700-2702
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	41
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2005.855223
Publication status	Published - 2005 Oct

Keywords

Antiferromagnetic (AFM)
Exchange bias
Exchange coupling
Heisenberg model
Noncollinear spin
Spin frustration
Spin structure

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/TMAG.2005.855223

Cite this

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title = "Exchange bias model in ferromagnetic/antiferromagnetic bilayer with L1 2-type ordered antiferromagnet",

abstract = "The exchange bias of the ferromagnetic (FM) and antiferromagnetic (AFM) bilayer having L12-type ordered structure has been investigated within the framework of Heisenberg model. The triangle lattice of magnetic atoms in the AFM layer realizes the triangular spin structure due to geometrical spin frustrations. This noncollinear spin structure can bring about an exchange bias in the FM/AFM bilayer system. Under the influence of the exchange bias, the uncompensated spin element appears in the AFM layer, resulting in a shifted loop in magnetization curves, in accord with the measured loop by X-ray magnetic circular dichroism spectroscopy for an AFM layer.",

keywords = "Antiferromagnetic (AFM), Exchange bias, Exchange coupling, Heisenberg model, Noncollinear spin, Spin frustration, Spin structure",

author = "C. Mitsumata and A. Sakuma and K. Fukamichi",

year = "2005",

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doi = "10.1109/TMAG.2005.855223",

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T1 - Exchange bias model in ferromagnetic/antiferromagnetic bilayer with L1 2-type ordered antiferromagnet

AU - Mitsumata, C.

AU - Sakuma, A.

AU - Fukamichi, K.

PY - 2005/10

Y1 - 2005/10

N2 - The exchange bias of the ferromagnetic (FM) and antiferromagnetic (AFM) bilayer having L12-type ordered structure has been investigated within the framework of Heisenberg model. The triangle lattice of magnetic atoms in the AFM layer realizes the triangular spin structure due to geometrical spin frustrations. This noncollinear spin structure can bring about an exchange bias in the FM/AFM bilayer system. Under the influence of the exchange bias, the uncompensated spin element appears in the AFM layer, resulting in a shifted loop in magnetization curves, in accord with the measured loop by X-ray magnetic circular dichroism spectroscopy for an AFM layer.

AB - The exchange bias of the ferromagnetic (FM) and antiferromagnetic (AFM) bilayer having L12-type ordered structure has been investigated within the framework of Heisenberg model. The triangle lattice of magnetic atoms in the AFM layer realizes the triangular spin structure due to geometrical spin frustrations. This noncollinear spin structure can bring about an exchange bias in the FM/AFM bilayer system. Under the influence of the exchange bias, the uncompensated spin element appears in the AFM layer, resulting in a shifted loop in magnetization curves, in accord with the measured loop by X-ray magnetic circular dichroism spectroscopy for an AFM layer.

KW - Antiferromagnetic (AFM)

KW - Exchange bias

KW - Exchange coupling

KW - Heisenberg model

KW - Noncollinear spin

KW - Spin frustration

KW - Spin structure

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