Abstract

Single crystals of Ca_{1 – y}Sr_yR_хF_{2 + х} (R = Ho, Pr) solid solutions with high optical quality have been grown by the Bridgman technique in vacuum using a fluorination atmosphere. The thermal conductivity of the Ca_0.60Sr_{0.40 – х}Ho_хF_{2 + х} solid solutions decreases from 3.27 to 2.37 W/(m K) as the fraction of holmium rises from 0 to 3 mol %, respectively. The room-temperature thermal conductivity of the Ca_0.50Sr_{0.50 – х}Pr_хF_{2 + х} solid solutions decreases from 3.38 to 2.18 W/(m K) as the fraction of praseodymium rises from 0 to 8 mol %, respectively. Increasing the holmium and praseodymium content of the ternary solid solutions leads to a gradual increase in their refractive index. With increasing wavelength, the refractive index gradually decreases.

中文翻译：

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CaF 2 -SrF 2 -RF 3（R = Ho，Pr）萤石固溶体单晶体的热物理性质

摘要

钙单晶_{1 - ý}锶_ý ř _х ˚F _{2 + х}（R =何，PR）具有高光学质量的固溶体已经通过使用氟化气氛中真空Bridgman技术生长。钙的热传导率_0.60锶_{0.40 - х}何_х ˚F _{2 + х}固溶减小从3.27到2.37 W /（米K）作为钬的分数分别上升为0〜3摩尔％。的室温导热性钙_0.50锶_{0.50 - х}镨_х ˚F _{2 + х}随着的比例分别从0摩尔％增加到8摩尔％，固溶体从3.38降低到2.18 W /（m K）。三元固溶体中the和ase含量的增加导致其折射率逐渐增加。随着波长的增加，折射率逐渐降低。