Ferromagnetic Double Perovskite Semiconductors with Tunable Properties

The authors successfully dope the magnetically silent double perovskite semiconductor Sr2 GaSbO6 to induce ferromagnetism and tune its bandgap, with Ga3+ partially substituted by the magnetic trivalent cation Mn3+ , in a rigid cation ordering with Sb5+ . The new ferromagnetic semiconducting Sr2 Ga1-x Mnx SbO6 double perovskite, which crystallizes in tetragonal symmetry (space group I4/m) and has tunable ferromagnetic ordering temperature and bandgap, suggests that magnetic ion doping of double perovskites is a productive avenue toward obtaining materials for application in next-generation oxide-based spintronic devices.