Magnetic and structural properties of quaternary (Fe-Co-Ni)50Pt50 alloy thin films

Takao Suzuki, Hiroshi Kanazawa, Akimasa Sakuma

Research output: Contribution to journalConference article

19 Citations (Scopus)

Abstract

The intrinsic perpendicular magnetic anisotropy constant Ku for (Fe-Co-Ni)50Pt50 quaternary alloy and (Fe-Cr)50Pt50 alloy thin films is discussed as a function of structure and composition. Both Ms and the estimated Ku values obtained by the extrapolation to order parameter S = 1 using the dependence of Ku on S become maximum at the valence electron number nelect = 8, being independent of alloy system. The magnetic anisotropy is determined to the first approximation by the Fermi energy, which changes with the number of electrons, but not by the band structure itself.

Original languageEnglish
Pages (from-to)2794-2795
Number of pages2
JournalIEEE Transactions on Magnetics
Volume38
Issue number5 I
DOIs
Publication statusPublished - 2002 Sep 1
Externally publishedYes
Event2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands
Duration: 2002 Apr 282002 May 2

Keywords

  • (Fe-Co-Ni-Cr)Pt ordered alloys
  • Magnetic anisotropy
  • Order parameter
  • Valence electron number

ASJC Scopus subject areas

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

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