Characterization of LuGdVO3 mixed crystal prepared by one new method

Abstract LuGdVO 3 was obtained by annealing the LuGdVO 4 crystal at 1500 °C under vacuum condition. The X-ray fluorescence analysis method was used to measure the concentrations of Lu and Gd elements in LuGdVO 4 . The XRD result indicated that LuGdVO 3 was the orthorhombic structure with space group Pbnm. The Raman spectrum of LuGdVO 3 was investigated at room temperature. The chemical states and local symmetry of the LuGdVO 3 crystal have been determined by XPS and XANES. It was found that the presence of different chemical forms of V evolved with annealing treatment, and the VO 6 unit in the LuGdVO 3 crystal was distorted octahedron. During the annealing process at high temperature under vacuum condition LuGdVO 4 can be gradually translated to LuGdVO 3 with decreasing lattice oxygen in the crystal lattice.