Investigation of Solid State Synthesis and Characterizations of Novel Sodium Rare-Earth Oxyphosphates

Authors : Semih SEYYİDOĞLU, Macit ÖZENBAŞ, Aysen YILMAZ

Pages : 35-54

View : 11 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A new orthorhombic phase of Na2LaOPO4 insert ignore into journalissuearticles values(sodium lanthanum oxyphosphate);, and novel Na2NdOPO4 insert ignore into journalissuearticles values(sodium neodymium oxyphosphate);, Na2SmOPO4 insert ignore into journalissuearticles values(sodium samarium oxyphosphate); were synthesized by solid state reactions of Na2CO3, NH4H2PO4, and Ln2O3 insert ignore into journalissuearticles values(Ln = La, Nd, and Sm);. The unit cell dimensions were calculated using their X-ray powder diffraction data, which were a = 13.60insert ignore into journalissuearticles values(1);, b = 12.71insert ignore into journalissuearticles values(1);, and c = 6.96insert ignore into journalissuearticles values(1); Å, a = 13.466insert ignore into journalissuearticles values(5);, b = 12.547insert ignore into journalissuearticles values(6);, and c = 6.932insert ignore into journalissuearticles values(5); Å, and a = 13.54insert ignore into journalissuearticles values(1);, b = 12.577insert ignore into journalissuearticles values(8);, and c = 7.047insert ignore into journalissuearticles values(5); Å, respectively, and the probable space group was Pmm2. Using the same procedure orthorhombic Na2DyOPO4 insert ignore into journalissuearticles values(sodium dysprosium oxyphosphate);, Na2HoOPO4 insert ignore into journalissuearticles values(sodium holmium oxyphosphate);, Na2ErOPO4 insert ignore into journalissuearticles values(sodium erbium oxyphosphate);, and Na2YbOPO4 insert ignore into journalissuearticles values(sodium ytterbium oxyphosphate); were also prepared for the first time in this work. The IR data of the compounds agreed with the values given in the literature. The Raman data and SEM micrographs of the synthesized compounds are given for the first time in this report.
Keywords : Oxyphosphates, Rare earths, Sodium Rare Earth Oxyphosphate, Raman, powder XRD, SEM