Abstract
Single crystals of Ca1 – ySryRхF2 + 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 Ca0.60Sr0.40 – хHoхF2 + 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 Ca0.50Sr0.50 – хPrхF2 + 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.
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This work was supported by the Presidium of the Russian Academy of Sciences, program no. 5: Photonic Technologies in Probing Inhomogeneous Media and Biological Systems.
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Kuznetsov, S.V., Konyushkin, V.A., Nakladov, A.N. et al. Thermophysical Properties of Single Crystals of CaF2–SrF2–RF3 (R = Ho, Pr) Fluorite Solid Solutions. Inorg Mater 56, 975–981 (2020). https://doi.org/10.1134/S0020168520090113
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DOI: https://doi.org/10.1134/S0020168520090113