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Ferromagnetism of manganese-doped InSb alloys |
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| Authors: | V M Novotortsev I S Zakharov A V Kochura S F Marenkin R Laiho E Lahderanta A Lashkul A G Veresov A V Molchanov G S Yur’ev |
| Institution: | (1) Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia;(2) Kursk State Technical University, ul. 50 let Oktyabrya 94, Kursk, Russia;(3) Wihuri Physical Laboratory, University of Turku, Turku, FIN-20014, Finland;(4) Department of Physics, Lappeenranta University of Technology, Lappeenranta, PO Box 20, FIN-53851, Finland;(5) Moscow State University, Vorob’evy gory, Moscow, 119992, Russia;(6) Institute of Inorganic Chemistry, Siberian Division, Russian Academy of Sciences, pr. Akademika Lavrent’eva 3, Novosibirsk, 630090, Russia |
| Abstract: | InSb samples containing 0.22–1.42 wt % manganese were synthesized and identified. The unit cell parameter decreased as the manganese concentration increased. The samples contained microinclusions of manganese antimonides. Electrical and magnetic measurements showed two ferromagnetic phases (In1?x MnxSb solid solution with T c ～ 7 K and MnSb with T c ～ 580 K) and a ferrimagnetic phase (Mn2Sb). The samples had p-type conductivity with a charge carrier concentration of about 1020cm?3. The semiconductor conductivity was observed at low temperatures and changed to the metal conductivity with temperature elevation. |
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