【摘 要】
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The recent results on hydrothermal synthesis of mixed rare earth-alkali or ammonium fluorides were presented.The initial ratios of the starting materials,pH val
【机 构】
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Key Laboratory of Luminescence and Optical Information
论文部分内容阅读
The recent results on hydrothermal synthesis of mixed rare earth-alkali or ammonium fluorides were presented.The initial ratios of the starting materials,pH value and reaction temperature were the critical factors for obtaining the single-phase product.Four main types of complex rare earth fluorides,AREF4,A2REF5,ARF2F7 and ARE3F10 (A=Na+,K+,Rb+,NH4+),appeared in the primary hydrothermal reactions.The correlation between cation sizes and the formation of mixed rare earth fluorides under mild hydrothermal condition was given.
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