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2008 | 114 | 5 | 1219-1227
Article title

Ferromagnetism of Narrow-Gap Ge_{1-x-y}Sn_xMn_yTe and Layered In_{1-x}Mn_xSe Semiconductors

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Abstracts
EN
Magnetic susceptibility, Hall effect and resistivity of narrow-gap Ge_{1-x-y}Sn_xMn_yTe single crystals (x = 0.083÷0.115; y = 0.025÷0.124) were investigated in the temperature range 4.2-300 K revealing a ferromagnetic ordering at T_C ≈ 50 K. Temperature dependence of magnetization indicates a superparamagnetic phase with magnetic clusters arranging in a spin glass state below the freezing temperature T_f. Magnetic structure of InSe ⟨Mn⟩ 2D-ferromagnetic single crystals was studied by SQUID magnetometry, neutron diffraction, secondary ion mass spectroscopy, and wave dispersive spectra. Hysteresis loops of magnetization were observed at least up to 350 K. The cluster model of ferromagnetism is considered. The formation of self-assembled superlattice ferromagnetic InSe:Mn/antiferromagnetic MnSe during growth process and further annealing was established.
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Contributors
author
  • Institute for Problems of Material Science, National Academy of Sciences of Ukraine, 3 Krzhizhanovskogo str., Kyiv, Ukraine
  • Institute for Problems of Material Science, National Academy of Sciences of Ukraine, 3 Krzhizhanovskogo str., Kyiv, Ukraine
author
  • Institute for Problems of Material Science, National Academy of Sciences of Ukraine, 3 Krzhizhanovskogo str., Kyiv, Ukraine
author
  • Institute for Problems of Material Science, National Academy of Sciences of Ukraine, 3 Krzhizhanovskogo str., Kyiv, Ukraine
author
  • Institute for Problems of Material Science, National Academy of Sciences of Ukraine, 3 Krzhizhanovskogo str., Kyiv, Ukraine
author
  • Institute for Problems of Material Science, National Academy of Sciences of Ukraine, 3 Krzhizhanovskogo str., Kyiv, Ukraine
author
  • Institute for Problems of Material Science, National Academy of Sciences of Ukraine, 3 Krzhizhanovskogo str., Kyiv, Ukraine
author
  • Institute for Problems of Material Science, National Academy of Sciences of Ukraine, 3 Krzhizhanovskogo str., Kyiv, Ukraine
  • Joint Institute for Nuclear Research, Dubna, Russia
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
References
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Document Type
Publication order reference
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bwmeta1.element.bwnjournal-article-appv114n533kz
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