Study and simulation of magnetic susceptibility of Si and Si0.95Ge0.05 whiskers

The magnetic susceptibilities of Si and Si 0.95 Ge 0.05 alloy whiskers of different diameters have been studied. Its significant difference from the magnetic susceptibility of a bulk material has been found. The presence of paramagnetic centers, some of which form magnetic nanoclusters in samples, i...

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Bibliographic Details
Published in:Semiconductors (Woodbury, N.Y.) N.Y.), 2010-05, Vol.44 (5), p.623-627
Main Authors: Tsmots, V. M., Litovchenko, P. G., Pavlovska, N. T., Pavlovskyy, Yu. V., Ostrovskyy, I. P.
Format: Article
Language:English
Subjects:
Low-Dimensional Systems
Magnetic Materials
Magnetism
Physics
Physics and Astronomy
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Summary:The magnetic susceptibilities of Si and Si 0.95 Ge 0.05 alloy whiskers of different diameters have been studied. Its significant difference from the magnetic susceptibility of a bulk material has been found. The presence of paramagnetic centers, some of which form magnetic nanoclusters in samples, is assumed. To explain the experimental results obtained, a model within Langevin superparamagnetism has been suggested. The distribution function of clusters over their magnetic moments has been constructed. The most probable sizes and magnetic moments of clusters are determined.
ISSN:1063-7826
1090-6479
DOI:10.1134/S1063782610050131