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Magneto transport measurements to unravel the epitaxial strain control of magnetic anisotropy in Ga1−xMnxAs/InGaAs layers

Dehbaoui, Mourad; Dumas, Richard; Hung, Tran Q.; Kamara, Souleymane; Sadowski, Janusz LU ; Domagala, Jaroslaw Z.; Terki, Férial and Charar, Salam (2018) In Journal of Magnetism and Magnetic Materials 451. p.167-172
Abstract

Diluted magnetic semiconductors are suitable for building spintronic devices owing to their ease of integration in magnetic/electronic/photonic devices. Moreover, the ability to control their behaviors playing on layers composition, crystallographic growth process and post growth treatment, makes them attractive for research and industrial applications. Using Hall measurements, we investigate here, the temperature and epitaxial strain effects on magnetic anisotropy of a diluted GaMnAs/InGaAs semiconductor. We evidenced that raising temperature biases magnetic exchange from planar cubic anisotropy to out-plane uniaxial anisotropy. Furthermore, we develop a free energy analysis and extract anisotropy fields to point out the dominance of... (More)

Diluted magnetic semiconductors are suitable for building spintronic devices owing to their ease of integration in magnetic/electronic/photonic devices. Moreover, the ability to control their behaviors playing on layers composition, crystallographic growth process and post growth treatment, makes them attractive for research and industrial applications. Using Hall measurements, we investigate here, the temperature and epitaxial strain effects on magnetic anisotropy of a diluted GaMnAs/InGaAs semiconductor. We evidenced that raising temperature biases magnetic exchange from planar cubic anisotropy to out-plane uniaxial anisotropy. Furthermore, we develop a free energy analysis and extract anisotropy fields to point out the dominance of uniaxial anisotropy for layers under high epitaxial tensile strain.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Diluted magnetic semiconductors, Magnetic anisotropy, Magnetic easy/hard axes, Magnetic hall effect
in
Journal of Magnetism and Magnetic Materials
volume
451
pages
6 pages
publisher
Elsevier
external identifiers
  • scopus:85034106434
ISSN
0304-8853
DOI
10.1016/j.jmmm.2017.11.001
language
English
LU publication?
yes
id
cc0f3de0-3879-4c0c-a4fe-0a0fa3503500
date added to LUP
2017-12-07 09:52:12
date last changed
2018-01-07 12:27:24
@article{cc0f3de0-3879-4c0c-a4fe-0a0fa3503500,
  abstract     = {<p>Diluted magnetic semiconductors are suitable for building spintronic devices owing to their ease of integration in magnetic/electronic/photonic devices. Moreover, the ability to control their behaviors playing on layers composition, crystallographic growth process and post growth treatment, makes them attractive for research and industrial applications. Using Hall measurements, we investigate here, the temperature and epitaxial strain effects on magnetic anisotropy of a diluted GaMnAs/InGaAs semiconductor. We evidenced that raising temperature biases magnetic exchange from planar cubic anisotropy to out-plane uniaxial anisotropy. Furthermore, we develop a free energy analysis and extract anisotropy fields to point out the dominance of uniaxial anisotropy for layers under high epitaxial tensile strain.</p>},
  author       = {Dehbaoui, Mourad and Dumas, Richard and Hung, Tran Q. and Kamara, Souleymane and Sadowski, Janusz and Domagala, Jaroslaw Z. and Terki, Férial and Charar, Salam},
  issn         = {0304-8853},
  keyword      = {Diluted magnetic semiconductors,Magnetic anisotropy,Magnetic easy/hard axes,Magnetic hall effect},
  language     = {eng},
  month        = {04},
  pages        = {167--172},
  publisher    = {Elsevier},
  series       = {Journal of Magnetism and Magnetic Materials},
  title        = {Magneto transport measurements to unravel the epitaxial strain control of magnetic anisotropy in Ga<sub>1−x</sub>Mn<sub>x</sub>As/InGaAs layers},
  url          = {http://dx.doi.org/10.1016/j.jmmm.2017.11.001},
  volume       = {451},
  year         = {2018},
}