Structural, optical and magnetic properties of (In1−xNix)2O3 (0≤x≤0.09) powders synthesized by solid state reaction

• Published in: Materials science in semiconductor processing 2014-02, Vol.18, p.22-27
• Main Authors: Sai Krishna, N., Kaleemulla, S., Amarendra, G., Madhusudhana Rao, N., Kuppan, M., Rigana Begam, M., Sreekantha Reddy, D.
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Diffraction; Exact sciences and technology; Ferromagnetism; Indium oxide; Magnetic properties; Magnetic properties and materials; Magnetic properties of nanostructures; Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals; Nickel; Optical properties; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures; Physics; Room temperature ferromagnetism; Semiconductors; Small particles and nanoscale materials; Solid state; Solid state reaction; Structure of solids and liquids; crystallography; Studies of specific magnetic materials; Vacuum annealing
• ISSN: 1369-8001; 1873-4081
• DOI: 10.1016/j.mssp.2013.10.012

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.