Magnetic anisotropy of (110) Fe/Co superlattices

V. A. Vas'ko*, Miyoung Kim, O. Mryasov, V. Sapozhnikov, M. K. Minor, A. J. Freeman, M. T. Kief

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Magnetic anisotropy field of (110) Fe/Co superlattices was found to be as high as 1 T, with an in-plane easy axis. First principles calculations within the local spin density approximation show good agreement with the measurement. Lowering the symmetry by creating artificial superlattice structures leads to a significant increase in magnetic anisotropy energy as compared with any allotropic form of the elemental components and cubic FeCo. Large anisotropy is attributed to the cubic symmetry breaking due to the multilayer artificial atomic arrangement. Dependence of the anisotropy field on the superlattice period is supported by Monte Carlo film growth modeling.

Original languageEnglish (US)
Article number092502
JournalApplied Physics Letters
Volume89
Issue number9
DOIs
StatePublished - Sep 8 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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