Abstract

KTb₃F₁₀ crystals have been grown from the melt by the vertical directional crystallization. The incongruent character of melting of this compound is confirmed experimentally. Corrections are introduced into the phase diagram of the KF–TbF₃ system. It is found that the optimal pre-peritectic composition for the KTb₃F₁₀ crystal growth corresponds to a KF content of 27.5 ± 0.5 mol % in melt. The KTb₃F₁₀ composition is a part of a nonstoichiometric phase of variable composition. The cubic (sp. gr. \(Fm\bar {3}m\)) lattice parameters are limited to the range from 11.679(1) to 11.663(1) Å.

中文翻译：

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通过垂直定向结晶技术生长KR 3F10（R = Tb–Er）晶体。I：KTb3F10生长的熔体组成的优化和KF–TbF3系统相图的校正

摘要

通过垂直定向结晶从熔体中生长出KTb ₃ F ₁₀晶体。通过实验证实了该化合物熔融的不一致特征。校正被引入到KF–TbF ₃系统的相图中。发现用于KTb ₃ F ₁₀晶体生长的最佳包晶前组成对应于熔体中的KF含量为27.5±0.5 mol％。KTb ₃ F ₁₀组成是可变组成的非化学计量相的一部分。三次（sp。gr。\（Fm \ bar {3} m \））晶格参数限制在从11.679（1）到11.663（1）Å的范围内。