混合碱土金属钨酸盐的合成及其溶混性

Synthesis and Miscibility of Mixed Alkali - earth Metal Tungstates

合成了一系列混合碱土金属钨酸盐，用粉末Ｘ射线衍射和电子衍射法表征了其晶体结构，并对钨酸钡单晶进行了 Ｘ射线能谱成份分析，所合成的化合物均属四方晶系，Ｉ４１／ａ空间群，钙和钡的钨酸盐能以任意比例互溶，而钙和钡的钨酸盐则以两相存在，并探讨了碱土金属钨酸盐溶混性的成因。

The CaSr(WO4)2, SrBa(WO4)2 and (Ca1 -xBax)WO4have been synthesized. The crystal structures were studied by means of powder X-ray diffraction and single crystal electron diffraction methods. The compositions of (Ca1 -xBax)WO4were analyzed with X - ray energ dispersive spectrometer (EDS). The miscibility of alkali - earth metal tungstates was discused.