The crystal structure, magnetism, and colossal magnetoresistance of Y 2 CrS 4

Ternary yttrium chromium sulfide, Y2CrS4, prepared by the solid-state reaction of Y2S3, Cr, and S, was found to exhibit an antiferromagnetic transition at about 64 K. The X-ray diffraction pattern at 300 K was refined with space group Pca21, and the structure parameters were determined to be a = 12.51 Å, b = 7.53 Å, and c = 12.49 Å. We investigated the magnetotransport properties, and observed negative colossal magnetoresistance reaching up to 2.5 × 104% in the semiconducting compound of Y2CrS4.