Anomalous pressure-induced enhancement of GMR in Fe/Cr magnetic multilayers

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

Research output: Contribution to journalArticlepeer-review

Abstract

We report the first observation of a large pressure-induced enhancement of the giant magnetoresistance (GMR) in magnetic multilayers (MMLs). In Fe/Cr MMLs with a Cr layer thickness (tCr) of ∼30 Å, a crossover from biquadratic to bilinear interlayer exchange coupling (IEC) was clearly observed by applying pressure and simultaneously the GMR under high pressure (>2 GPa) was enhanced to be twice as large as that at ambient pressure. The enhanced GMR is attributed to the suppression of the biquadratic IEC due to the application of pressure.

Original languageEnglish
Pages (from-to)90-91
Number of pages2
Journaljournal of the physical society of japan
Volume76
Issue numberSUPPL. A
DOIs
Publication statusPublished - 2007 Jan 1

Keywords

  • Fe/Cr magnetic multilayer
  • Giant magnetoresistance
  • High pressure
  • Interlayer exchange coupling
  • Spin-dependent scattering

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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