Pressure-enhanced giant magnetoresistance in Fe/Cr magnetic multilayers

Gendo Oomi, Shuhei Higashihara, Kazufumi Suenaga, Kesami Saito, Koki Takanashi, Seiji Mitani

Research output: Contribution to journalArticle

Abstract

The magnetoresistance of Fe/Cr magnetic multilayers (MMLs) on the 1st and the 2nd peaks has been measured at high pressure up to 3 GPa at low temperature in order to make clear the characteristics of the giant magnetoresistance (GMR) under high pressure. The GMRs of the MMLs on the 2nd peak are found to be enhanced strongly by applying pressure whereas those of 1st peak MMLs decrease with increasing pressure. The magnitude of GMR of the 2nd peak MMLs becomes about twice or more at 2 GPa compared with the value at ambient pressure. The large difference in the pressure dependences is explained by assuming a pressure-induced crossover in the interlayer exchange coupling from the biquadratic to the bilinear spin arrangements.

Original languageEnglish
Pages (from-to)1929-1932
Number of pages4
JournalJournal of the Korean Physical Society
Volume62
Issue number12
DOIs
Publication statusPublished - 2013 Jul 1

Keywords

  • Crossover
  • Electrical resistance
  • Giant magnetoresistance
  • High pressure

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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