monazite- or rhabdophane-type structures for various x values using three methods of preparation (direct evaporation, synthesis in closed PTFE containers on a sand bath or in autoclaves). Samples of rhabdophane-type La1−xGdxPO4·nH2O (n≈0.5) were prepared at 150°C only for x≥0.4. For x≤0.3, the solids were precipitated as the monazite-type structure. These results were confirmed by the study of pure rare earth
使用三种制备方法(直接法)以独居石或菱
锰矿型结构制备了几种La 1 − x Gd x PO 4固溶体,以得到不同的x值。蒸发,在沙浴中或在高压釜中的密闭P
TFE容器中合成)。rhabdophane型La中的样品1 - X的Gd X PO 4 · Ñ ħ 2 O(Ñ ≈ 0.5)在150制备℃下只对X ≥ 0.4。对于X ≤ 0.3,将固体沉淀为独居石型结构。这些结果通过纯稀土的研究得到了证实。
磷酸盐在相同条件下合成。通过这些手段,良好结晶和MPO的单相样品4 · Ñ ħ 2 O(Ñ ≈ 0.5-1)在独居石(
镧,
铈),rhabdophane(
钕,
钐,
铕,
钆,
铽,
镝)或churchite (Ho,Er,Tm,Yb,Lu)的形式已准备好。