Characterization of new compound and phase equilibria up to solidus line in the system InVO4–NiO
2015
Paczesna, Agnieszka | Filipek, Elzbieta
A new compound of the formula Ni2InVO6, belonging to the family M2AVO6 (where: M→metal(II), A→metal(III) has been obtained by the solid state reaction method. The compound was synthesized by heating in air the stoichiometric mixtures of InVO4 with NiO as well as V2O5 and In2O3 with precursor of NiO. It was characterized by powder XRD, DTA–TGA, IR, UV–Vis-DR and SEM/EDX techniques. According to the results, the new compound crystallizes in the orthorhombic system. Its unit cell parameters have been calculated. Ni2InVO6 is stable in air up to ∼1330°C. The band gap of Ni2InVO6 is ∼1.92eV as estimated from UV–Vis-DR spectrum. A phase diagram of the pseudobinary InVO4–NiO system, in which the new compound forms, up to the solidus line has been constructed.
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