Phase transitions and colossal magnetoresistance in CuVxCr1−x
S2 layered disulfides |
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| Authors: | G M Abramova G A Petrakovskiĭ A M Vorotynov D A Velikanov N I Kiselev A F Bovina R Szymczak R F Al’mukhametov |
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| Institution: | (1) Kirenskiĭ Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russia;(2) Institute of Physics, Polish Academy of Sciences, 02-668 Warsaw, Poland;(3) Bashkortostan State University, ul. Frunze 32, Ufa, 450074, Russia |
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| Abstract: | New substances CuVxCr1?x S2 are synthesized in which colossal magnetoresistance (T C = 95 K, δH = ?60%, H = 7 kOe), as well as the sequence of phase transitions with change in the conduction type and magnetic order, is observed as temperature is varied. The change found in the magnetic and electric properties of the CuVxCr1?x S2 compounds may be a consequence of a specific disintegration into Cu+Cr3+S2 and Cu2+Cr2+S2 and a change in the concentration relation between these electronic phases in the substance bulk. |
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