Negative anisotropic magnetoresistance in fe4n film

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

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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 languageEnglish
Article number083001
JournalApplied Physics Express
Volume2
Issue number8
DOIs
Publication statusPublished - 2009 Aug 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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