Oxide solubility and Raman spectra of NdF3-LiF-KF-MgF2-Nd2O3 melts
Oxide solubility and Raman spectra of NdF3-LiF-KF-MgF2-Nd2O3 melts
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DOI：
10.1039/b111563b
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发表时间：
2002-01-01
期刊：
影响因子：
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通讯作者：
Ostvold, T
中科院分区：
文献类型：
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作者：
Stefanidaki, E;Photiadis, GM;Ostvold, T
在900℃时，NdF3在NdF3-LiF-MgF2熔体中的溶解度在NdF3-LiF-MgF2熔体中的溶解度为0.08-0.38mol%。在NdF_3-LiF共晶中，溶解度从750℃时的0.13摩尔%增加到900℃时的0.22摩尔%。在NdF3-LiF二元熔体中加入MgF2后，在NdF3含量为30%时，其溶解度略有下降，而在NdF3含量为15%时，其溶解度略有增加。在NdF_3-LiF共晶体系中溶解Nd_2O_3时，拉曼光谱表明熔体中可能形成络合离子NdOFx(x-1)-和Nd2OF(x+3)((x-1)-)。最合理的候选者似乎是：单核化合物中的NdOF43-和NdOF54-，以及双核配合物中的Nd2OF106-和Nd2OF84-。
The solubility of Nd2O3 in NdF3-LiF-MgF2 melts is about 0.08-0.38 mol% when the NdF3 concentration varies from 15 to 30 mol% at 900degreesC. The solubility increases from 0.13 mol% at 750 degreesC to 0.22 mol% at 900 degreesC in the NdF3-LiF eutectic. When MgF2 is added to NdF3-LiF binary melts saturated with Nd2O3, the Nd2O3 solubility seems to decrease slightly at 30 mol% NdF3, while a slight increase was observed with 15 mol% NdF3 in the binary. When dissolving Nd2O3 in the NdF3-LiF eutectic Raman spectroscopy showed that the complex ions NdOFx(x-1)- and Nd2OF(x+3)((x-1)-) may form in the melt. The most reasonable candidates seem to be: NdOF43- and NdOF54- among the mononuclear compounds and Nd2OF106-, Nd2OF84- among the binuclear complexes.