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A new rare-earth vanadate LaBa_2V_3O_(11)is synthesized by the conventional solidstate reaction.The single phase can be obtained at sintering temperature of 1010°C.TheX-ray powder diffraction shows that the new compound has tetragonal structure with cellparameters a of 7.94 and c of 24.27 The LaBaaV_3O_(11)can be decomposed to LaVO_4.Ba3(VO_2)_2 and V_2O_5 by higher sitering temperature than 1010°C.The as-sintered sample isinsulator with resistivity of 10 12 ohm cm.Furthermore,if the as-sintered sample wasannealed under H_2 atmosphere,the LaBa_2V_3O_(11)decomposed to LaVO_3 and BaYO_4 despite ofthe lower annealing temperature of 950°C.
A new rare-earth vanadate LaBa_2V_3O_ (11) is synthesized by the conventional solid state reaction. The single phase can be obtained at sintering temperature of 1010 ° C. TheX-ray powder diffraction shows that the new compound has tetragonal structure with cell parameters a of 7.94 and c of 24.27 The LaBaaV_3O_ (11) can be decomposed to LaVO_4.Ba3 (VO_2) _2 and V_2O_5 by higher sitering temperature than 1010 ° C. The as-sintered sample isinsulator with resistivity of 10 12 ohm cm. -sintered sample wasannealed under H_2 atmosphere, the LaBa_2V_3O_ (11) decomposed to LaVO_3 and BaYO_4 despite of the lower annealing temperature of 950 ° C.