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Novel Quaternary Dilute Magnetic Semiconductor (Ga,Mn)(Bi,As) : Magnetic and Magneto-Transport Investigations

Levchenko, K.; Andrearczyk, T.; Domagala, J. Z.; Sadowski, J. LU ; Kowalczyk, L.; Szot, M.; Kuna, R.; Figielski, T. and Wosinski, T. (2016) In Journal of Superconductivity and Novel Magnetism p.1-5
Abstract

Magnetic and magneto-transport properties of thin layers of the (Ga,Mn)(Bi,As) quaternary dilute magnetic semiconductor grown by the low-temperature molecular-beam epitaxy technique on GaAs substrates have been investigated. Ferromagnetic Curie temperature and magneto-crystalline anisotropy of the layers have been examined by using magneto-optical Kerr effect magnetometry and low-temperature magneto-transport measurements. Post-growth annealing treatment of the layers has been shown to enhance the hole concentration and Curie temperature in the layers. A significant increase in the magnitude of magneto-transport effects caused by incorporation of a small amount of Bi into the (Ga,Mn)As layers, revealed in the planar Hall effect (PHE)... (More)

Magnetic and magneto-transport properties of thin layers of the (Ga,Mn)(Bi,As) quaternary dilute magnetic semiconductor grown by the low-temperature molecular-beam epitaxy technique on GaAs substrates have been investigated. Ferromagnetic Curie temperature and magneto-crystalline anisotropy of the layers have been examined by using magneto-optical Kerr effect magnetometry and low-temperature magneto-transport measurements. Post-growth annealing treatment of the layers has been shown to enhance the hole concentration and Curie temperature in the layers. A significant increase in the magnitude of magneto-transport effects caused by incorporation of a small amount of Bi into the (Ga,Mn)As layers, revealed in the planar Hall effect (PHE) measurements, is interpreted as a result of enhanced spin-orbit coupling in the (Ga,Mn)(Bi,As) layers. A two-state behaviour of the planar Hall resistance at zero magnetic field provides its usefulness for applications in non-volatile memory devices.

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author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Magnetic semiconductors, Magneto-optical Kerr effect, Magneto-resistance, Planar Hall effect, Raman spectroscopy, Thin films
in
Journal of Superconductivity and Novel Magnetism
pages
5 pages
publisher
Springer New York
external identifiers
  • scopus:84987597556
  • wos:000395062600038
ISSN
1557-1939
DOI
10.1007/s10948-016-3752-3
language
English
LU publication?
yes
id
72d7aacd-7951-4c5a-9dcf-f723666713a1
date added to LUP
2016-11-04 10:47:33
date last changed
2017-09-18 11:29:20
@article{72d7aacd-7951-4c5a-9dcf-f723666713a1,
  abstract     = {<p>Magnetic and magneto-transport properties of thin layers of the (Ga,Mn)(Bi,As) quaternary dilute magnetic semiconductor grown by the low-temperature molecular-beam epitaxy technique on GaAs substrates have been investigated. Ferromagnetic Curie temperature and magneto-crystalline anisotropy of the layers have been examined by using magneto-optical Kerr effect magnetometry and low-temperature magneto-transport measurements. Post-growth annealing treatment of the layers has been shown to enhance the hole concentration and Curie temperature in the layers. A significant increase in the magnitude of magneto-transport effects caused by incorporation of a small amount of Bi into the (Ga,Mn)As layers, revealed in the planar Hall effect (PHE) measurements, is interpreted as a result of enhanced spin-orbit coupling in the (Ga,Mn)(Bi,As) layers. A two-state behaviour of the planar Hall resistance at zero magnetic field provides its usefulness for applications in non-volatile memory devices.</p>},
  author       = {Levchenko, K. and Andrearczyk, T. and Domagala, J. Z. and Sadowski, J. and Kowalczyk, L. and Szot, M. and Kuna, R. and Figielski, T. and Wosinski, T.},
  issn         = {1557-1939},
  keyword      = {Magnetic semiconductors,Magneto-optical Kerr effect,Magneto-resistance,Planar Hall effect,Raman spectroscopy,Thin films},
  language     = {eng},
  month        = {09},
  pages        = {1--5},
  publisher    = {Springer New York},
  series       = {Journal of Superconductivity and Novel Magnetism},
  title        = {Novel Quaternary Dilute Magnetic Semiconductor (Ga,Mn)(Bi,As) : Magnetic and Magneto-Transport Investigations},
  url          = {http://dx.doi.org/10.1007/s10948-016-3752-3},
  year         = {2016},
}