Kerr effect of ordered and disordered Fe1-xPtx (001) alloy films

Y. M. Hu, J. C.A. Huang, S. Y. Huang, T. H. Wu

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

The (001) oriented Fe1-xPtx alloy films have been grown on Pt seeding layers on MgO (001) substrates by MBE. At growth temperature of 500 °C, rather ordered structures were formed for FePt, FePt2, and FePt3 films, which exhibit large perpendicular magnetic anisotropy and Kerr rotations. In contrast, Fe2Pt and Fe3Pt films were poorly ordered and did not display perpendicular magnetization for similar growth conditions. The optimal growth temperature of the FePt (x = 0.5) alloys occurs at about 500 °C, and the surface order-disorder transition occurs above 650 °C. We demonstrate that chemical ordering is important for perpendicular magnetic anisotropy and Kerr effects for Fe1-xPtx alloy films, which in turn depend strongly on the alloy composition and growth temperature.

Original languageEnglish
Pages (from-to)2417-2419
Number of pages3
JournalIEEE Transactions on Magnetics
Volume37
Issue number4 I
DOIs
Publication statusPublished - 2001 Jul 1
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: 2001 Jan 72001 Jan 11

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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