Abstract

The thermal conductivity of CuGaTe₂ and CuInTe₂ was measured at high temperatures (300–800 K). The potential mechanisms of heat transport are analyzed. The total thermal conductivity of the examined compounds in the studied temperature range is completely determined by the thermal conductivity of the crystal lattice λ_lat. It is demonstrated that the thermal conductivity of the crystal lattice changes with temperature faster than with λ_lat ∼ Т^–1. The potential causes of the deviation of the thermal conductivity of the crystal lattice from the Eucken law are considered.

中文翻译：

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在300–800 K的温度范围内，CuGaTe 2和CuInTe 2三元化合物的导热系数

摘要

在高温（300–800 K）下测量了CuGaTe ₂和CuInTe ₂的热导率。分析了热传递的潜在机理。在研究的温度范围内，所检查化合物的总热导率完全取决于晶格_λlat的热导率。据证实，晶格的热导率随温度比λ更快改变_经纬度〜Т ^-1。考虑了晶格导热率偏离欧肯定律的潜在原因。