Determination of the size of Fe grains in Ag by Mössbauer spectroscopy

J. Balogh, D. Kaptás, I. Vincze, K. Temst, C. Van Haesendonck

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Abstract

The decrease of the average magnetic grain size with increasing Ag spacer thickness was deduced recently from bulk magnetic properties of Fe/Ag granular multilayers. Now we show detailed Mössbauer spectroscopy measurements that support this finding and determine the hyperfine fields of Fe atoms in the grain boundaries. The grain size estimated by a simple model from the grain boundary fraction agrees well with that obtained from the external field dependence of the hyperfine field in the superparamagnetic state.

Original languageEnglish
Article number052408
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number5
DOIs
Publication statusPublished - Aug 28 2007

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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