Negative anisotropic magnetoresistance in fe4n film

Masakiyo Tsunoda; Yosuke Komasaki; Satoshi Kokado; Shinji Isogami; Che Chin Chen; Migaku Takahashi

doi:10.1143/APEX.2.83001

Negative anisotropic magnetoresistance in fe₄n film

Masakiyo Tsunoda, Yosuke Komasaki, Satoshi Kokado, Shinji Isogami, Che Chin Chen, Migaku Takahashi

ENG - Electronic Engineering

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

62 Citations (Scopus)

Abstract

Negative anisotropic magnetoresistance (AMR) is observed in Fe₄N film from 4.2 to 300 K. The AMR ratio rises with temperature in a stepwise fashion near 50 K, and is accompanied by a change in the magnetization hysteresis. The Campbell and Fert model is extended to investigate the influence of spin-polarization of conduction electrons on the AMR, and it is found that the negative AMR is not observed for majority spin conduction in ferromagnets. Consequently, it is concluded that the negative AMR that observed in the present study is possibly clear evidence of minority spin conduction in Fe4N film, as is predicted theoretically.

Original language	English
Article number	083001
Journal	Applied Physics Express
Volume	2
Issue number	8
DOIs	https://doi.org/10.1143/APEX.2.83001
Publication status	Published - 2009 Aug 1

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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abstract = "Negative anisotropic magnetoresistance (AMR) is observed in Fe4N film from 4.2 to 300 K. The AMR ratio rises with temperature in a stepwise fashion near 50 K, and is accompanied by a change in the magnetization hysteresis. The Campbell and Fert model is extended to investigate the influence of spin-polarization of conduction electrons on the AMR, and it is found that the negative AMR is not observed for majority spin conduction in ferromagnets. Consequently, it is concluded that the negative AMR that observed in the present study is possibly clear evidence of minority spin conduction in Fe4N film, as is predicted theoretically.",

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T1 - Negative anisotropic magnetoresistance in fe4n film

AU - Tsunoda, Masakiyo

AU - Komasaki, Yosuke

AU - Kokado, Satoshi

AU - Isogami, Shinji

AU - Chen, Che Chin

AU - Takahashi, Migaku

PY - 2009/8/1

Y1 - 2009/8/1

N2 - Negative anisotropic magnetoresistance (AMR) is observed in Fe4N film from 4.2 to 300 K. The AMR ratio rises with temperature in a stepwise fashion near 50 K, and is accompanied by a change in the magnetization hysteresis. The Campbell and Fert model is extended to investigate the influence of spin-polarization of conduction electrons on the AMR, and it is found that the negative AMR is not observed for majority spin conduction in ferromagnets. Consequently, it is concluded that the negative AMR that observed in the present study is possibly clear evidence of minority spin conduction in Fe4N film, as is predicted theoretically.

AB - Negative anisotropic magnetoresistance (AMR) is observed in Fe4N film from 4.2 to 300 K. The AMR ratio rises with temperature in a stepwise fashion near 50 K, and is accompanied by a change in the magnetization hysteresis. The Campbell and Fert model is extended to investigate the influence of spin-polarization of conduction electrons on the AMR, and it is found that the negative AMR is not observed for majority spin conduction in ferromagnets. Consequently, it is concluded that the negative AMR that observed in the present study is possibly clear evidence of minority spin conduction in Fe4N film, as is predicted theoretically.

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