Current perpendicular to film plane type giant magnetoresistance effect using a Ag-Mg spacer and Co2Fe0.4Mn0.6Si Heusler alloy electrodes

Hiroyuki Narisawa, Takahide Kubota, Koki Takanashi

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

The current perpendicular to film plane type giant magnetoresistance (CPP-GMR) effect in Co2Fe0.4Mn0.6Si/Ag83Mg17/Co2Fe0.4Mn0.6Si junctions was investigated. An epitaxially grown 5-nm-thick Ag83Mg17 film having partially ordered L12 structure was fabricated on the Co2Fe0.4Mn0.6Si layer by magnetron sputtering. CPP-GMR effects were observed in the submicrometer-sized junctions, and the maximum value of the observed (intrinsic) MR ratio was 40% (48%) at room temperature. The average change in the resistance-area product was 23mO&μm2 for the Ag-Mg junctions, which was higher than those of conventional CPP-GMR junctions using a Ag spacer layer.

Original languageEnglish
Article number063008
JournalApplied Physics Express
Volume8
Issue number6
DOIs
Publication statusPublished - 2015 Jun 1

ASJC Scopus subject areas

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

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