A new strontium vanadium sulfide, SrV2S5

A new strontium vanadium sulfide, SrV2S5 has been successfully synthesized. The powder X-ray diffraction pattern has been indexed on the basis of a rhombohedral cell with hexagonal lattice constants of a = 3.314 and c = 35.023 Angstrom. However, the electron diffraction measurements show that the structure is more complex and has an unidentified superstructure. The specimens of SrV2S5 show no indication of superconductivity down to 2 K, The resistivity is low, semiconductive, and weakly dependent on temperature above 50 K, The magnetic susceptibility is nearly temperature independent above similar to 80 K; below 50 K it shows extremely small Curie-Weiss-like behavior. Temperature dependence of the Knight shift in vanadium NMR shows a broad peak around 80 K. (C) 1996 Academic Press, Inc.