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Structural and magnetic properties of MnAs/GaAs ferromagnetic semiconductor nanocomposite material

Author

  • Adam Kwiatkowski
  • Dariusz Wasik
  • Maria Kaminska
  • Jolanta Borysiuk
  • Rafal Bozek
  • Janusz Sadowski
  • Andrzej Twardowski

Summary, in English

Self-organized (Ga,Mn)As nanoclusters, embedded in GaAs and formed during thermal annealing of Ga1-xMnxAs layer at 500 degrees C or 600 degrees C, were studied using Transmission Electron Microscopy (TEM) and Magnetic Force Microscopy (MFM). We found that 10-20 nm large NiAs-type hexagonal MnAs nanocrystals gave magnetic contrast in MFM images, whereas smaller zinc-blende nanoinclusions were not visible by means of this technique. Theoretical simulations showed that MFM contrasts reflect interaction between magnetic tip and many randomly distributed MnAs nanocrystals.

Department/s

Publishing year

2008

Language

English

Pages

740-743

Publication/Series

Journal of Materials Science: Materials in Electronics

Volume

19

Issue

8-9

Document type

Journal article

Publisher

Springer

Topic

  • Physical Sciences
  • Natural Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 0957-4522