Magnetism In Double Perovskites
Magnetism and geometrical frustration in double perovskites. Beyond topological materials, we also investigate 3d–5d double perovskites in collaboration with our oxides subgroup. The subtle balance between the spin freedom and lattice distortion induce interesting magnetism and phase transitions in Sr2FeOsO6 and Sr2CoOsO6. We revealed the unusually large long-range exchange coupling, e.g. Os – Os >> Os – Co or Os – Fe .