Abstract
Nickel-doped indium oxide diluted magnetic semiconducting powders ((In1−xNix)2O3, x=0.00, 0.03, 0.05, 0.07 and 0.09) were synthesized by a simple solid state reaction followed by vacuum annealing. Structural, optical and magnetic properties of (In1−xNix)2O3 powders were studied as a function of doped Ni concentration. X-ray diffraction confirmed polycrystalline cubic structures. Decrease in optical band gap from 3.07eV to 2.99eV was observed when dopant concentration of Ni was increased from x=0.03 to x=0.07. Vibrating sample magnetometer measurements confirmed that all (In1−xNix)2O3 powders were ferromagnetic at room temperature.
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