Abstract

Ternary vanadium sulfides, M x VS 2 ( M = Fe, Co, Ni), with x = 1 4 , 1 3 , and 1 2 , were prepared and studied. The x = 1 4 and x = 1 2 series are isostructural with V 5S 8 and V 3S 4, respectively, while compounds with x = 1 3 appear to have the hexagonal Cr 2S 3 structure. Structures of NiV 2S 4 and NiV 4S 8 were refined from powder X-ray diffraction intensities. Magnetic and electrical properties reveal that M ions in these sulfides exist in the divalent state having localized moments, while the vanadium 3 d electrons are itinerant.

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