Mössbauer studies of ultrathin Fe/Pt multilayers

A. Simopoulos, A. Kostikas, E. Devlin, A. Jankowski, T. Tsakalakos

Research output: Contribution to journalArticlepeer-review

Abstract

A series of ultrathin Fe/Pt multilayers, prepared by magnetron sputtering, were studied by CEMS and transmission MS. The Fe-layer thickness varied from 3 to 12.5 Å and that of Pt from 5 Å to 39 Å. The 3 Å/9 Å Pt sample displays magnetic hyperfine structure at RT, while the 3 Fe/19 Pt sample is paramagnetic at RT, demonstrating the effect of interlayer interaction. Both samples display out-of-plane magnetic anisotropy with 39° angle with respect to the vertical for the former and nearly 0° angle for the latter. The analysis of the spectra of samples with thickness larger than one monolayer of Fe is done with components assigned to individual Fe monolayers. In all these cases a component appears with a hyperfine field larger by ∼ 10% at RT and 17% at L.He than the corresponding values of α-Fe. This component is attributed to the first monolayer below the Fe/Pt interface in accordance with similar results in the Fe/Pd system and with theoretical predictions.

Original languageEnglish (US)
Pages (from-to)319-323
Number of pages5
JournalIl Nuovo Cimento D
Volume18
Issue number2-3
DOIs
StatePublished - Feb 1996

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

Keywords

  • 01.30.Cc
  • 70.70.Cn
  • 75.50.Rr
  • 75.70.Ak
  • 76.80
  • Conference proceedings
  • Interfacial magnetic properties
  • Magnetic properties of monolayers and overlayers
  • Magnetism in interface structures (including layer and superlattice structures)
  • Mössbauer effect
  • other γ-ray spectroscopy

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