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Magnetic properties of MnAs nanocrystals embedded in GaAs

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Author

  • A. Kwiatkowski
  • D. Wasik
  • P. Dluzewski
  • J. Borysiuk
  • M. Kaminska
  • A. Twardowski
  • Janusz Sadowski

Summary, in English

A phenomenological model for explaining the magnetic properties of MnAs nanocrystals embedded in GaAs is proposed. It is shown that experimental data of DC magnetization as a function of temperature, obtained according to zero-field-cooled and field-cooled protocols, can be understood assuming a transition of the system from a low temperature state in which very slow dynamics is observed(frozen state) to a high-temperature state in which dynamics is fast(quasi superparamagnetic state). (C) 2009 Elsevier B. V. All rights reserved.

Department/s

Publishing year

2009

Language

English

Pages

2788-2791

Publication/Series

Journal of Magnetism and Magnetic Materials

Volume

321

Issue

18

Document type

Journal article

Publisher

Elsevier

Topic

  • Natural Sciences
  • Physical Sciences

Keywords

  • Nanoprecipitate
  • Nanocrystal
  • Nanocomposite
  • Superparamagnet

Status

Published

ISBN/ISSN/Other

  • ISSN: 0304-8853