Structural characterization of Co100-xFex nano-oxide layer

Hiroaki Endo; Masaaki Doi; Naoya Hasegawa; Masashi Sahashi

doi:10.1063/1.2165591

Structural characterization of Co100-xFex nano-oxide layer

Hiroaki Endo, Masaaki Doi, Naoya Hasegawa, Masashi Sahashi

ENG - Electronic Engineering

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

Abstract

For the structural characterization of a Co100-x Fex nano-oxide layer (NOL), the exchange bias properties of the Co100-x Fex -natural oxidized NOL in the specular spin-valve (SPSV) system were investigated. The exchange bias energy (Jex) increased monotonically with the increasing Fe content for the Co100-x Fex -NOL. The enhancement of both the magnetoresistance ratio and the exchange bias field (Hex) was realized by increasing the Fe content in the Co100-x Fex -NOL. It should be mentioned that Hex more than 800 Oe is obtained by the insertion of Co30 Fe70 -NOL, even in NOL-SPSV, which is a remarkably higher pinning field than that ever reported on IrMn-SV. This high exchange bias field is considered to be realized by the formation of an Fe-rich fcc phase at the interface of IrMn.

Original language	English
Article number	08R703
Journal	Journal of Applied Physics
Volume	99
Issue number	8
DOIs	https://doi.org/10.1063/1.2165591
Publication status	Published - 2006 May 25

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)
Physics and Astronomy(all)

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title = "Structural characterization of Co100-xFex nano-oxide layer",

abstract = "For the structural characterization of a Co100-x Fex nano-oxide layer (NOL), the exchange bias properties of the Co100-x Fex -natural oxidized NOL in the specular spin-valve (SPSV) system were investigated. The exchange bias energy (Jex) increased monotonically with the increasing Fe content for the Co100-x Fex -NOL. The enhancement of both the magnetoresistance ratio and the exchange bias field (Hex) was realized by increasing the Fe content in the Co100-x Fex -NOL. It should be mentioned that Hex more than 800 Oe is obtained by the insertion of Co30 Fe70 -NOL, even in NOL-SPSV, which is a remarkably higher pinning field than that ever reported on IrMn-SV. This high exchange bias field is considered to be realized by the formation of an Fe-rich fcc phase at the interface of IrMn.",

author = "Hiroaki Endo and Masaaki Doi and Naoya Hasegawa and Masashi Sahashi",

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T1 - Structural characterization of Co100-xFex nano-oxide layer

AU - Endo, Hiroaki

AU - Doi, Masaaki

AU - Hasegawa, Naoya

AU - Sahashi, Masashi

PY - 2006/5/25

Y1 - 2006/5/25

N2 - For the structural characterization of a Co100-x Fex nano-oxide layer (NOL), the exchange bias properties of the Co100-x Fex -natural oxidized NOL in the specular spin-valve (SPSV) system were investigated. The exchange bias energy (Jex) increased monotonically with the increasing Fe content for the Co100-x Fex -NOL. The enhancement of both the magnetoresistance ratio and the exchange bias field (Hex) was realized by increasing the Fe content in the Co100-x Fex -NOL. It should be mentioned that Hex more than 800 Oe is obtained by the insertion of Co30 Fe70 -NOL, even in NOL-SPSV, which is a remarkably higher pinning field than that ever reported on IrMn-SV. This high exchange bias field is considered to be realized by the formation of an Fe-rich fcc phase at the interface of IrMn.

AB - For the structural characterization of a Co100-x Fex nano-oxide layer (NOL), the exchange bias properties of the Co100-x Fex -natural oxidized NOL in the specular spin-valve (SPSV) system were investigated. The exchange bias energy (Jex) increased monotonically with the increasing Fe content for the Co100-x Fex -NOL. The enhancement of both the magnetoresistance ratio and the exchange bias field (Hex) was realized by increasing the Fe content in the Co100-x Fex -NOL. It should be mentioned that Hex more than 800 Oe is obtained by the insertion of Co30 Fe70 -NOL, even in NOL-SPSV, which is a remarkably higher pinning field than that ever reported on IrMn-SV. This high exchange bias field is considered to be realized by the formation of an Fe-rich fcc phase at the interface of IrMn.

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