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2008 | 114 | 5 | 1159-1165

Article title

Magnetic Properties of Epitaxial (Ge,Mn)Te Thin Films with Varying Crystal Stoichiometry

Content

Title variants

Languages of publication

EN

Abstracts

EN
Magnetization of 1 μm thick ferromagnetic IV-VI (Ge, Mn)Te semiconductor layers with 10 at.% of Mn was studied by SQUID magnetometry method up to the magnetic fields of 70 kOe. The layers were grown on BaF₂ (111) substrates by molecular beam epitaxy with varying Te molecular flux, which permitted the control of layer stoichiometry and conducting hole concentration. X-ray diffraction and in situ electron diffraction characterization of layer growth and crystal structure revealed two-dimensional mode of growth and monocrystalline rhombohedral crystal structure of (Ge, Mn)Te layers. Controlling the layer stoichiometry influences the temperature dependence of magnetization with the ferromagnetic Curie temperature varying in Ge_{0.9}Mn_{0.1}Te layers from T_c=30 K (low Te flux) to T_c=42 K (high Te flux).

Keywords

EN

Year

Volume

114

Issue

5

Pages

1159-1165

Physical description

Dates

published
2008-11
received
2008-06-07

Contributors

author
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
author
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
author
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
author
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
author
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
author
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
author
  • Faculty of Mathematics and Natural Sciences, College of Science, Cardinal S. Wyszyński University, Dewajtis 5, 01-185 Warsaw, Poland
author
  • Department of Physics and Center for Nanophysics and Advanced Materials, University of Maryland, College Park, MD 20742, USA
author
  • Department of Physics and Center for Nanophysics and Advanced Materials, University of Maryland, College Park, MD 20742, USA

References

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  • 2. T. Story, in: Lead Chalcogenides - Physics and Applications, Ed. D.R. Khokhlov, Taylor and Francis, New York 2003, p. 385
  • 3. W.J.M. de Jonge, T. Story, H.J.M. Swagten, P.J.T. Eggenkamp, Europhys. Lett. 17, 631 (1992)
  • 4. P.J.T. Eggenkamp, H.J.M. Swagten, T. Story, V.I. Litvinov, W.J.M. de Jonge, Phys. Rev. B 51, 15250 (1995)
  • 5. Y. Fukuma, H. Asada, M. Arifuku, T. Koyanagi, Appl. Phys. Lett. 80, 1013 (2002)
  • 6. W.Q. Chen, K.L. Teo, S.T. Lim, M.B.A. Jalil, T. Liew, T.C. Chong, Appl. Phys. Lett. 90, 142514 (2007)
  • 7. Y. Fukuma, K. Goto, S. Senba, S. Miyawaki, H. Asada, T. Koyanagi, H. Sato, J. Appl. Phys. 103, 053904 (2008)
  • 8. W. Knoff, P. Dziawa, V. Osinniy, B. Taliashvili, V. Domuchowski, E.Łusakowska, K. Swiatek, T. Story, Mater. Sci. - Poland 25, 295 (2007)

Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.bwnjournal-article-appv114n524kz
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