Abstract

The thermodynamic distribution coefficient for Sr²⁺ impurity in LaF₃ crystal at infinite dilution (c → 0) k₀ = 1.60 ± 0.02 is determined based on the data on directional solidification of La_1 − ySr_yF_3 − y solid solutions (0.01 ≤ y ≤ 0.15, LaF₃ tysonite structure type). The obtained k₀ value is in good agreement with the estimated distribution coefficient k₀ = 1.7, which was found previously by modified cryoscopy from the liquid–solid phase diagram of the SrF₂–LaF₃ system.

中文翻译：

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基于La 1-y Sr y F 3-y固溶体定向凝固的数据，计算LaF 3晶体中Sr 2+的无穷稀释分布系数

摘要

根据La _{1- y} Sr _y F _{3- y}固溶体的定向凝固数据确定LaF ₃晶体中Sr ²⁺杂质在无限稀释（c  →0）k ₀ = 1.60±0.02时的热力学分布系数（ 0.01≤ ÿ ≤0.15，的LaF ₃ tysonite结构类型）。所获得的k ₀值与估计的分配系数k ₀ = 1.7很好地吻合，分配系数k ₀ = 1.7先前是通过改进的低温检查从SrF ₂ -LaF的液相-固相​​图中发现的  ₃系统。