Synthesis and Its Hydrolyzation, Thermal Stability and Rare Earth Activated Luminescent Properties of Ba_3BPO_7

We explored the synthesis methods of Ba3BPO7 by the high temperature solid reaction method; single phase of Ba3BPO7 was obtained with 3:1 molar ratio of BaCO3 and BPO4, 3:1:1mo-lar ratio of BaCO3, NH4H2PO4 and H3BO3, 2:1:1 molar ratio of BaCO3, BaHPO4 and H3BO3, respectively. The hydrolyzation and thermal stability properties of Ba3BPO7 were investigated. The results show that Ba3BPO7 can react with water and form the final products of Ba3(PO4)2, Ba5(PO4)3OH and Ba(OH)2; TG-DTA shows that it melts congruently and its melting point is about 1353℃. The X-ray excited luminescent properties of Ba3BPO7 with rare earth activated were also investigated. The results show that there is energy transfer between the host and rare earth ions.