@article{oai:nagoya.repo.nii.ac.jp:00031178, author = {Adachi, Kengo and Sato, Kiyoo and Kojima, Kiyoshi}, issue = {2}, journal = {Memoirs of the Faculty of Engineering, Nagoya University}, month = {Mar}, note = {The atomic position and the antiferromagnetic spin structure of FeCr2Se4, which has the monoclinic (pseudo hexagonal) structure ( A=6.23 Å, B=3.62 Å, C=11.79 Å and β=90°49’ at 293°K), were determined by means of neutron diffraction. Fe atoms are situated in the layer lattice with ordered vacant sites, while Cr atoms are situated in the layer without vacant sites. The magnetic unit cell is found to be 2A×B×2C. The spin structure of the spins of Fe and Cr atoms was determined as [C]-type defined by Bertaut et al., and the spins orient along near [1‾01]. The observed magnetic moments are 3.1±0.3μB for Cr and 4.2±0.3μB for Fe, which correspond to the chromic and the ferrous ion respectively. Some discussions on ionic and magnetic properties of MM’2Se4 are given.}, pages = {253--261}, title = {Neutron diffraction study of FeCr2Se4}, volume = {22}, year = {1971} }