Atomic structure and magnetic moments in cluster-assembled nanocomposite Fe/Cu films

S. H. Baker, Abu Asaduzzaman, M. Roy, S. J. Gurman, C. Binns, J. A. Blackman, Y. Xie

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Abstract

The atomic structure and net magnetic moments in nanosized Fe clusters embedded in Cu were determined as a function of cluster filling fraction by extended x-ray-absorption fine structure (EXAFS) and magnetometry measurements, respectively. Below the percolation threshold (∼25%), the Fe clusters have an fcc structure with a lattice parameter of 3.58±0.02 Å and are ferromagnetic with a net atomic magnetic moment of 0.4-0.9 μB. Spin polarized electronic structure calculations were also performed on Fe core/Cu shell systems to investigate the magnetic behavior as a function of lattice spacing; the calculated moments correlate well with experiment.

Original languageEnglish (US)
Article number014422
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number1
DOIs
Publication statusPublished - Jul 22 2008

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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