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Influence of defects on the lattice constant of GaMnAs

Sadowski, Janusz LU and Domagala, JZ (2004) In Physical Review B (Condensed Matter and Materials Physics) 69(7).
Abstract
We study the influence of the major compensating defects As antisites and Mn interstitials known to occur in the GaMnAs ferromagnetic semiconductor on its structural properties. Our experimental results show that there is a balance between Mn interstitial and As antisite defects, leading to the reduced density of one type of defect upon increasing the density of the other defect. Significant differences in the lattice parameters of GaMnAs with different balances between these two types of defects were observed. The annealing-induced reduction of the GaMnAs lattice constant is inhibited in samples with a large density of As antisites.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
69
issue
7
publisher
American Physical Society
external identifiers
  • wos:000220055300050
  • scopus:1642322589
ISSN
1098-0121
DOI
10.1103/PhysRevB.69.075206
language
English
LU publication?
yes
id
3cfcf913-f5e8-4c04-90cc-7f6115dc59dd (old id 285046)
date added to LUP
2007-10-31 11:05:55
date last changed
2017-02-26 04:07:02
@article{3cfcf913-f5e8-4c04-90cc-7f6115dc59dd,
  abstract     = {We study the influence of the major compensating defects As antisites and Mn interstitials known to occur in the GaMnAs ferromagnetic semiconductor on its structural properties. Our experimental results show that there is a balance between Mn interstitial and As antisite defects, leading to the reduced density of one type of defect upon increasing the density of the other defect. Significant differences in the lattice parameters of GaMnAs with different balances between these two types of defects were observed. The annealing-induced reduction of the GaMnAs lattice constant is inhibited in samples with a large density of As antisites.},
  author       = {Sadowski, Janusz and Domagala, JZ},
  issn         = {1098-0121},
  language     = {eng},
  number       = {7},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Influence of defects on the lattice constant of GaMnAs},
  url          = {http://dx.doi.org/10.1103/PhysRevB.69.075206},
  volume       = {69},
  year         = {2004},
}