Coexistence of antiferromagnetism and superconductivity: A neutron diffraction study of DyMo/sub 6/S/sub 8/
Although DyMo/sub 6/S/sub 8/ is a superconducting below T/sub c/ = 2.05 K previous studies of the resistivity, susceptibility, and upper critical field strongly suggest the development of magnetic order at T/sub M/ = 0.4 K. The present neutron study shows conclusively that this superconducting compound also develops coexistent long-range (greater than 300 A) antiferromagnetic order at T/sub M/. The Dy atoms form a simple cubic sublattice (with a slight rhombohedral distortion) in which the observed magnetic structure consisting of (100) planes with moments of 8.77..mu../sub B/ alternately parallel and antiparallel to the (111) direction.