Buffer layer dependence of magnetic anisotropy in Fe films grown GaAs substrate

Yujin Jeong, Hakjoon Lee, Sangyeop Lee, Taehee Yoo, Sang Hoon Lee, X. Liu, J. K. Furdyna

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4 Citations (Scopus)

Abstract

The effect of buffer layer on the magnetic anisotropy of Fe film has been investigated by using the planar Hall effect measurement. The Fe films were grown on four different buffer layers, such as GaAs, ZnSe, ZnTe, and Ge, by molecular beam epitaxy. The field and angle dependent planar Hall effect measurements revealed the presence of two types of magnetic anisotropies, i.e., cubic crystalline anisotropy along the <100> directions and uniaxial anisotropy along the <100> crystallographic directions, in all four Fe films investigated in the study. However, the relative strength of the two types of anisotropies varies significantly depending on the type of buffer layer. Specially, in the Fe film grown on the Ge buffer layer, the uniaxial anisotropy almost disappeared and the entire magnetic anisotropy was dominated by cubic anisotropy with a four-fold symmetry. This suggests that the growth of Fe film on the Ge surface is different from its growth on other surfaces such as GaAs, ZnSe, and ZnTe buffers, where the asymmetric reconstruction process of anions (i.e., As, Se, or Te) is present at the surface.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalSolid State Communications
Volume200
DOIs
Publication statusPublished - 2014 Jan 1

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Chemistry

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