Abstract—

The thermal conductivity κ of single crystals of the Sr_1–xBa_xF₂ fluorite solid solution series has been measured in the temperature range 50–300 K by an absolute steady-state axial heat flow technique. The thermal conductivity has been shown to decrease with increasing temperature. Its composition dependences have a minimum at intermediate compositions. The congruently melting composition Sr_0.34Ba_0.66F₂, corresponding to the minimum in liquidus curves, has κ = 15.2 W/(m K) at 50 K and 2.95 W/(m K) at 300 K.

中文翻译：

---

Sr1 – xBaxF2 单晶的热导率

摘要-

Sr _{1– x} Ba _x F ₂萤石固溶体系列单晶的热导率κ已通过绝对稳态轴向热流技术在50–300 K 的温度范围内测量。已显示热导率随温度升高而降低。它的成分依赖性在中间成分处具有最小值。与液相线曲线中的最小值相对应的一致熔融成分 Sr _0.34 Ba _0.66 F ₂在 50 K 下具有 κ = 15.2 W/(m K)，在 300 K 下具有 2.95 W/(m K)。