Magnetic properties of Ag/Co/Pt(1 1 1) ultrathin films

C. W. Su, F. C. Chen, Y. E. Wu, C. S. Shern

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The magnetic anisotropy of Ag/Co/Pt(1 1 1) ultrathin films was studied by the surface magneto-optic Kerr effect. Some interesting magnetic properties were observed. The location of Ag atoms on Co sites seems to prevent the spin reversal of Co. The saturated magnetization is not significantly changed after Ag ultrathin films are deposited on the Co/Pt(1 1 1) surfaces. The Curie temperatures increase after the Ag ultrathin film deposition. During thermal annealing, the out-of-plane magnetization in the Ag capped films is enhanced dramatically. The structural changes and the evolution of the chemical composition at the interfaces during the annealing were studied by low-energy electron diffraction and Auger electron spectroscopy, respectively. The giant enhancement of the out-of-plane magnetization is due to the formation of Co-Pt alloy and Ag overlayer improving the interface structure.

Original languageEnglish
Pages (from-to)492-497
Number of pages6
JournalSurface Science
Volume507-510
DOIs
Publication statusPublished - 2002 Jun 1

Keywords

  • Alloys
  • Auger electron spectroscopy
  • Cobalt
  • Low energy electron diffraction (LEED)
  • Magnetic interfaces
  • Platinum
  • Silver

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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