Magnetic properties of MnAs nanocrystals embedded in GaAs

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

Research output: Contribution to journalArticlepeer-review

6 Citations (SciVal)

Abstract

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.
Original languageEnglish
Pages (from-to)2788-2791
JournalJournal of Magnetism and Magnetic Materials
Volume321
Issue number18
DOIs
Publication statusPublished - 2009

Subject classification (UKÄ)

  • Natural Sciences
  • Physical Sciences

Keywords

  • Nanoprecipitate
  • Nanocrystal
  • Nanocomposite
  • Superparamagnet

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