Kerr effect of ordered and disordered Fe 1-x Pt x (001) alloy films

Y. M. Hu, Jung-Chun Huang, S. Y. Huang, T. H. Wu

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

The (001) oriented Fe 1-x Pt x 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, FePt 2 , and FePt 3 films, which exhibit large perpendicular magnetic anisotropy and Kerr rotations. In contrast, Fe 2 Pt and Fe 3 Pt 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 Fe 1-x Pt x 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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Growth temperature
Magnetic anisotropy
Order disorder transitions
Molecular beam epitaxy
Magnetization
Substrates
Chemical analysis

All Science Journal Classification (ASJC) codes

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

Cite this

Hu, Y. M. ; Huang, Jung-Chun ; Huang, S. Y. ; Wu, T. H. / Kerr effect of ordered and disordered Fe 1-x Pt x (001) alloy films In: IEEE Transactions on Magnetics. 2001 ; Vol. 37, No. 4 I. pp. 2417-2419.
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Kerr effect of ordered and disordered Fe 1-x Pt x (001) alloy films . / Hu, Y. M.; Huang, Jung-Chun; Huang, S. Y.; Wu, T. H.

In: IEEE Transactions on Magnetics, Vol. 37, No. 4 I, 01.07.2001, p. 2417-2419.

Research output: Contribution to journalConference article

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