Magnetic moment in the top Pt layer of Co/Pt bilayers

M. Suzuki, H. Miyagawa, N. Kawamura, H. Muraoka, Y. Inaba, T. Shimatsu, Y. Sonobe, Y. Isohama, N. Nakamura, N. Ishimatsu, H. Maruyama

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

The magnetic properties of a few atomic Pt layers on a 15nm thick Co film were studied by x-ray magnetic circular dichroism spectroscopy at the Pt L 2,3 edges. The spin and orbital magnetic moments of the Pt 5d electrons were separated using the magneto-optical sum rules. The Pt magnetization profile as a function of distance from the Co-Pt interface was determined using data from a series of films with various Pt thicknesses. This magnetization profile was approximated by an exponential function with a decay length of 0.41nm, which characterizes the effective range of the magnetic coupling between Co and Pt. The total magnetic moment of a Pt atom at the interface was 0.7μB/atom including a 13% orbital moment. This is discussed in the context of the thermal stability of magnetic recording media capped with a thin layer of Pt.

Original languageEnglish
Pages (from-to)580-582
Number of pages3
JournalPhysica Scripta T
VolumeT115
DOIs
Publication statusPublished - 2005
Event12th X-ray Absorption Fine Structure International Conference, XAFS12 - Malmo, Sweden
Duration: 2003 Jun 232003 Jun 27

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics

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