Approximate models for the lattice thermal conductivity of alloy thermoelectrics
Jonathan M. Skelton
Abstract
We develop and test three models for the lattice thermal conductivity of the Sn(S 0.1875 Se 0.8125 ) alloy, and show that the reported lower κ latt relative to SnSe arises from reduced phonon velocities due to a “smearing” of the phonon dispersion.
Topics & Concepts
Materials sciencePhononAlloyThermoelectric materialsCondensed matter physicsThermal conductivityLattice (music)Dispersion (optics)MetallurgyComposite materialPhysicsQuantum mechanicsAcousticsAdvanced Thermoelectric Materials and DevicesThermal properties of materialsAdvanced Thermodynamics and Statistical Mechanics