Soft perpendicular magnetization and spin reorientation transition of Fe films on NiAl(001)

Yin Chih Lin, Chii Bin Wu, Wei Shu Li, Ying Chin Chen, Zheng Yuan Huang, Wen Chin Lin, Minn Tsong Lin

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Ultrathin Fe films were deposited on NiAl(001) for studies of their magnetic properties and crystalline structures. Thickness-driven perpendicular to in-plane spin reorientation transition was observed at a thickness of ∼4 monolayers (MLs) at room temperature without structural variation. At less than the critical thickness, the Fe film's easy axis is perpendicular to the surface plane with a small coercive field (Hc ≈ 1 Oe), which was much smaller than that of other systems with perpendicular anisotropy. The Fe/NiAl(001) system revealed an extremely soft perpendicular magnetization. At more than the critical thickness, the easy axis lays in the surface plane. The magnetic anisotropy terms were calculated and discussed through a phenomenological model. The weaker surface anisotropy might be attributed to the reconstructed NiAl(001) surface.

Original languageEnglish
Article number023005
JournalApplied Physics Express
Volume7
Issue number2
DOIs
Publication statusPublished - 2014 Feb 1

ASJC Scopus subject areas

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

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