Thermal conductivity of polycrystalline and amorphous Se–Te–Cu system Original Research Article

The thermal conductivity of chalcogenide binary Se–Te and ternary Se–Te–Cu alloys (polycrystalline and amorphous) has been investigated in stationary conditions within the temperature range 7–315 K. Non-typical low-temperature sharp maximum at about 14 K in the crystalline samples has been observed. A hysteresis has appeared in the amorphous sample with 5% Cu content. Qualitative analysis of the measurement results based on the Boltzmann equation has been presented.