Akademik Məlumat İdarəetmə Sistemi
International Conference on Modern Trends in Physics, Baku, Azerbaijan, 1 - 03 May 2019, pp.27-31
The work is devoted to the study of thermal conductivity of solid solutions of the TlInSe2-TlYbSe2 system. The mechanisms of phonon scattering in them are determined. The diagram "Composition-thermal properties" of this system in the field of solubility is constructed.It is established that in solid solutions TlIn1-xYbxSe2, as the content of ytterbium in the compositions increases, the lattice thermal conductivity and the exponent in its temperature dependence decrease significantly. It was found that in these solid solutions, at temperatures above Debye, phonon scattering simultaneously with three-phonon flip processes an active role is played by normal processes and scattering on point defects.