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

Kwiatkowski, Adam ; Wasik, Dariusz ; Kaminska, Maria ; Borysiuk, Jolanta ; Bozek, Rafal ; Sadowski, Janusz LU and Twardowski, Andrzej (2008) In Journal of Materials Science: Materials in Electronics 19(8-9). p.740-743
Abstract
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.
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Materials Science: Materials in Electronics
volume
19
issue
8-9
pages
740 - 743
publisher
Springer
external identifiers
  • wos:000255879000013
  • scopus:44149085676
ISSN
0957-4522
DOI
10.1007/s10854-007-9400-8
language
English
LU publication?
yes
id
7b4ad50f-9ecf-4ad7-8f71-d4c82944f404 (old id 1203660)
date added to LUP
2016-04-01 13:05:56
date last changed
2022-01-27 17:17:42
@article{7b4ad50f-9ecf-4ad7-8f71-d4c82944f404,
  abstract     = {{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.}},
  author       = {{Kwiatkowski, Adam and Wasik, Dariusz and Kaminska, Maria and Borysiuk, Jolanta and Bozek, Rafal and Sadowski, Janusz and Twardowski, Andrzej}},
  issn         = {{0957-4522}},
  language     = {{eng}},
  number       = {{8-9}},
  pages        = {{740--743}},
  publisher    = {{Springer}},
  series       = {{Journal of Materials Science: Materials in Electronics}},
  title        = {{Structural and magnetic properties of MnAs/GaAs ferromagnetic semiconductor nanocomposite material}},
  url          = {{http://dx.doi.org/10.1007/s10854-007-9400-8}},
  doi          = {{10.1007/s10854-007-9400-8}},
  volume       = {{19}},
  year         = {{2008}},
}