Modeling of Magnetic Hyperfine Field Distribution for Spherical Nanoparticles of bcc Structure
T. Szumiata, M. Gzik-Szumiata, K. Brzózka, M. Gawroński and B. Górka
Department of Physics, Technical University of Radom, Krasickiego 54, 26-600 Radom, Poland
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Received: 9 07 2007;
We propose a simple model for temperature evolution of magnetic hyperfine field distribution of spherical bcc Fe nanoparticles. We performed mean field approximation calculations of mean spin value in each spherical shell of nanoparticle. Considering magnetic hyperfine field values reported for iron thin films we predicted possible values of hyperfine fields in the internal and surface region of the particles as a function of temperature.
DOI: 10.12693/APhysPolA.113.537
PACS numbers: 78.67.Bf, 76.80.+y