Study of giant magnetoresistance behavior in sputter-deposited Cr-Fe alloy films

T. Sugawara, K. Takanashi, K. Hono, H. Fujimori

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We report the giant magnetoresistance (MR) behavior in Cr-Fe alloy films and its variation with composition and substrate temperature in conjunction with microstructure observations. The MR observed as a function of Fe concentration shows a maximum around 20 at% Fe at any substrate temperatures. A large difference in the magnitude of MR is observed between the specimens deposited on cooled and heated substrates when the Fe concentrations are lower than 25 at%, while MR values do not depend on the substrate temperature for specimens containing Fe larger than 25 at%. The temperature dependence of the magnetization shows that the magnetization with a zero field cooling exhibits a maximum at a certain temperature (Tp). Tp increases gradually as a function of Fe concentration of the specimens, but it starts to increase drastically when the concentration of Fe exceeds 20 at%, where MR shows the maximum value.

Original languageEnglish
Pages (from-to)95-102
Number of pages8
JournalJournal of Magnetism and Magnetic Materials
Volume159
Issue number1-2
DOIs
Publication statusPublished - 1996 Jun

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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