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Magnetic properties of MnAs nanocrystals embedded in GaAs

Författare:
Publiceringsår: 2009
Språk: Engelska
Sidor: 2788-2791
Publikation/Tidskrift/Serie: Journal of Magnetism and Magnetic Materials
Volym: 321
Nummer: 18
Dokumenttyp: Artikel
Förlag: Elsevier Science B.V

Sammanfattning

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.

Disputation

Nyckelord

  • Physics and Astronomy
  • Nanoprecipitate
  • Nanocrystal
  • Nanocomposite
  • Superparamagnet

Övrigt

Published
Yes
  • ISSN: 0304-8853

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