Hematite Mitra S, Das S, Basu S, Sahu P, Mandal K Journal of Magnetism and Magnetic Materials 321 (2009) 2925-2931 Shape- and field-dependent Morin transitions in structured alpha-Fe2O3 Note: rhombohedral model Locality: synthetic _database_code_amcsd 0021166 5.03502 5.03502 13.7660 90 90 120 R-3c atom x y z occ Biso Fe 0 0 .3554 .9934 .68 O .3082 0 .25 .95