Anisotropy in thin film galfenol deposited on LiNbO3 as measured by MOKE

Christopher Clark, Andrew Huxley, David Czerski, Paul Record

Research output: Contribution to journalArticlepeer-review

Abstract

We report the magnetic anisotropy of films of the magnetostrictive alloy galfenol deposited on a LiNbO3 substrate measured with the magneto-optic Kerr effect (MOKE). This anisotropy is present in 250 nm thick films but is absent in 600 nm thick films, most probably showing a loss in epitaxy with thickness. An anisotropy constant of ku = 3.45kJm−3 is deduced. Magnetic stripe domains (width 30 μm) oriented along the easy axis, parallel to the substrate (11¯00) axis, could be created and imaged.

Original languageEnglish
Article number167799
JournalJournal of Magnetism and Magnetic Materials
Volume529
Early online date4 Feb 2021
DOIs
Publication statusE-pub ahead of print - 4 Feb 2021

Keywords

  • FeGa
  • Magnetic anisotropy
  • MOKE
  • Thin film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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