Syntheses, Structures, and Characterization of 5-Layer BaVO3-x (x = 0.2, 0.1, 0.0)

A 5-layer mixed valence oxide, BaVO2.8, has been synthesized by reducing Ba2V2O7 in high purity hydrogen gas at 1350°C. BaVO2.9 has been obtained by room temperature oxidation of BaVO2.8 in air and BaVO3.0 obtained by annealing BaVO2.8 or BaVO2.9 at 200°C in air. The structures of this series of novel compounds have been refined by the Rietveld method using neutron and X-ray diffraction data. Magnetic and electrical properties were examined …