Magnetic phases of FexV1?x
S and their electronic structure |
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| Authors: | G V Loseva S G Ovchinnikov É K Yakubailik N I Kiselev T A Gaidalova |
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| Institution: | (1) L. V. Kirenskii Institute of Physics, Siberian Branch of the Russian Academy of Sciences, 660036 Krasnoyarsk, Russia;(2) Institute of Chemistry, Far-Eastern Branch of the Russian Academy of Sciences, 690022 Vladivostok, Russia |
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| Abstract: | A study has been made of the FexV1−x
S solid solutions with 0<x<0.5. For the compounds with x>0.1, x-ray diffraction analysis discloses a V5S8 superstructure. Samples with x>0.1 are magnetically ordered at room temperature. The concentration dependences of resistivity and magnetization exhibit
sharp peaks for x=0.1 and x=0.2, respectively. The main features of the structure and electronic properties have been qualitatively explained in terms
of the three-band exciton-insulator model, and the maxima in resistivity and magnetization are assigned to the formation of
localized magnetic moments with S=1, which become delocalized with increasing x.
Fiz. Tverd. Tela (St. Petersburg) 40, 1890–1893 (October 1998) |
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