Phase Composition and Magnetic Properties of Nanoperm Thin Films Doped with Yttrium
K. Brzózkaa, P. Sovákb, T. Szumiataa, B. Górkaa and M. Gawrońskia
aDepartment of Physics, Technical University of Radom, I. Krasickiego 54, 26-600 Radom, Poland
bInstitute of Physics, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia
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Thin films of Nanoperm alloys with partial substitution of iron by yttrium are the subject of investigations. The attention is fixed on the influence of yttrium substitution on structure and magnetic characteristics of the samples. The effect of film thickness is also considered. Conversion: electron Mössbauer spectroscopy and magneto-optic Kerr effect were used to derive hyperfine parameters and coercive field, respectively. Coexistence of crystalline bcc-Fe phase and an amorphous one with diverse proportion was stated in most of the samples. It was found that surface and interface regions contribute to the magnetic properties of films.
DOI: 10.12693/APhysPolA.121.1270
PACS numbers: 75.50.Bb, 75.70.-i, 76.80.+y, 78.20.Ls