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Magnetic properties of CuGa0.94Mn0.06Te2

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Abstract

As part of a search for new spintronic materials, we have studied the magnetic properties of the CuGa0.94Mn0.06Te2 chalcopyrite solid solution in the range 2–400 K in weak and strong magnetic fields. Magnetization isotherms, σ(H), were obtained in magnetic fields of up to 3980 kA/m. σ(T) data were collected in two ways: the sample was cooled in a magnetic field or in zero field. The experimental data were analyzed by fitting to the Langevin function. The data are adequately represented by this relation in the case when the magnetic moment of the clusters is μcl = 23.4μB and the concentrations of magnetic clusters and noninteracting Mn2+ ions are n cl = 2.4 × 1025 m−3 and n pm = 5.7 × 1025 m−3, respectively. The calculated average cluster size is d cl = 33 Å, the number of Mn2+ ions per cluster is z = 21 atoms per cluster, and the magnetic moment per Mn2+ ion in the clusters is μMn = 1.1μB. This μMn value is far below the theoretical magnetic moment of the Mn2+ ion in the electronic configuration d 5(5.9μB), suggesting antiferromagnetic exchange interaction.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    T. G. Aminov, N. N. Efimov, G. G. Shabunina & V. M. Novotortsev

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  1. T. G. Aminov
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  2. N. N. Efimov
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  3. G. G. Shabunina
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  4. V. M. Novotortsev
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Correspondence to T. G. Aminov.

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Original Russian Text © T.G. Aminov, N.N. Efimov, G.G. Shabunina, V.M. Novotortsev, 2012, published in Neorganicheskie Materialy, 2012, Vol. 48, No. 6, pp. 661–668.

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Aminov, T.G., Efimov, N.N., Shabunina, G.G. et al. Magnetic properties of CuGa0.94Mn0.06Te2 . Inorg Mater 48, 569–576 (2012). https://doi.org/10.1134/S0020168512060027

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  • DOI: https://doi.org/10.1134/S0020168512060027

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