Significant modification of perpendicular magnetic anisotropy of W/Fe(001) multilayer by controlling in-plane lattice constant

Yuki Matsumoto, Yoshio Miura, Satoshi Okamoto, Nobuaki Kikuchi, Osamu Kitakami

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

First-principles calculation predicts a large negative to positive change in the intrinsic perpendicular magnetic anisotropy (PMA) on the order of 107 erg/cm3 of a W/Fe(001) multilayer upon reducing the in-plane lattice constant. This PMA arises at the W/Fe interface, and the second interfacial W site plays an important role. To experimentally verify this theoretical prediction, we have grown W/Fe/W(001) epitaxial trilayers on Cr(001) underlayers. By varying the W layer thickness, the in-plane lattice constant of W can be widely controlled, and the large change in PMA from negative to positive is successfully demonstrated.

Original languageEnglish
Article number063005
JournalApplied Physics Express
Volume10
Issue number6
DOIs
Publication statusPublished - 2017 Jun

ASJC Scopus subject areas

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

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