Effect of antiferromagnetic grain size on exchange-coupling field of Cr70Al30/Fe19Ni81 bilayers

Hiroko Uyama, Yoshichika Otani, Kazuaki Fukamichi, Osamu Kitakami, Yutaka Shimada, Jun Ichi Echigoya

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

The exchange-coupling mechanism of Cr70Al30/Fe19Ni81 bilayer films was investigated in terms of the crystallographic orientation, the interface roughness, and the grain size. The exchange-coupling field Hex appears when the Cr70Al30 layer is thick enough to accommodate an antiferromagnetic domain wall. The value of Hex was found to increase with decreasing the grain size in association with the [110] orientation. This tendency can be explained by considering the exchange-coupling field evaluated from the random field approximation.

Original languageEnglish
Pages (from-to)1258-1260
Number of pages3
JournalApplied Physics Letters
Volume71
Issue number9
DOIs
Publication statusPublished - 1997 Sep 1

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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