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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
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
2008-09-17 10:15:39
date last changed
2017-01-01 05:28:03
@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},
  volume       = {19},
  year         = {2008},
}