Oscillatory interlayer exchange coupling in epitaxial Co2 MnSiCr Co2 MnSi trilayers

H. Wang, A. Sato, K. Saito, S. Mitani, K. Takanashi, K. Yakushiji

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

Interlayer exchange coupling (IEC) in trilayers, which consist of a full Heusler Co2 MnSi (CMS) phase as ferromagnetic layers separated by a Cr spacer layer, has been investigated. The shape of magnetization loops shows unusual oscillatory behavior with the thickness of Cr. The oscillation period is about 3.3-3.5 nm. The charecteristics of magnetization curves show that 90° coupling plays a dominant role in IEC between CMS layers. Moreover, the strength of 90° coupling turns out to be very high (up to -1.85 ergs cm2) around the first oscillation peak.

Original languageEnglish
Article number142510
JournalApplied Physics Letters
Volume90
Issue number14
DOIs
Publication statusPublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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