Abstract
The phase formation in the system Me2O-Nd2O3-P2O5-H2O (where Me = Li, Na, K, Rb and Cs) has been studied under hydrothermal conditions in the temperature and pressure range 300 to 700‡ C and 0.5 to 600 atm, respectively, using vitreous carbon glass liners. A composition diagram showing the possible fields of crystallization of different phases under equilibrium conditions is given. AB-diagrams of fields of crystallization of different phases in the system investigated are given. These diagrams are in correspondence with the theoretical composition diagram. The advantages and disadvantages of different methods employed in the growth of MeNd-phosphates are discussed. The crystals obtained were characterized by various methods.
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Byrappa, K., Litvin, B.N. Hydrothermal synthesis of mixed phosphates of neodymium and alkaline metals (Me2O·Nd2O3·4P2O5). J Mater Sci 18, 703–708 (1983). https://doi.org/10.1007/BF00745567
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DOI: https://doi.org/10.1007/BF00745567