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Phase equilibria and electrical and magnetic properties of a eutectic in the GaSb-MnSb system |
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| Authors: | S F Marenkin V M Trukhan S V Trukhanov I V Fedorchenko V M Novotortsev |
| Institution: | 1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia 2. MISiS National Research Technological University, Leninskii pr. 4, Moscow, 119991, Russia 3. Scientific and Practical Center for Materials Science, National Academy of Sciences of Belarus, ul. P. Brovki 19, Minsk, 22072, Belarus |
| Abstract: | A set of physicochemical analysis methods showed that GaSb and MnSb form a eutectic at 41 mol % MnSb and T melt = 632°C. The eutectic is of the platelet type and has metallic conduction. The eutectic GaSb + MnSb is a composite ferromagnetic with a Curie temperature of ～600 K. The behavior of the electrical resistance in a magnetic field is complex. At low magnetic fields up to 0.8 T, the resistance abruptly drops, and at high magnetic fields, it slowly increases. Such behavior occurs both at low temperatures (5 K) and at 300 K. The change of the trend in the resistance takes place at the magnetic field at which there is magnetization saturation in the magnetic field dependences. Such a dependence of the resistance on the magnetic field is explained by a change of the mechanism of scattering of charge carriers. |
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