Room-temperature ferromagnetism in mn and Fe codoped In2O3

The synthesis and characterization of polycrystalline room-temperature ferromagnetic semiconductor (In0.9Fe0.1-xMnx)(2)O-3 (x=0-0.1) oxide are reported. All of the samples with intermediate x values are ferromagnetic at room temperature. The highest saturation magnetization moment at 300 K per total amount of magnetic ion is reached in the (In0.9Fe0.04Mn0.06)(2)O-3 sample. The lattice constant a increases linearly with increasing Mn content. Fe-only doped samples were paramagnetic, while a Mn-only doped sample was found to be ferromagnetic below T-C=46 K. (c) 2006 American Institute of Physics.