Capturing Anharmonicity in a Lattice Thermal Conductivity Model for High-Throughput Predictions

Samuel A. Miller, Prashun Gorai, Brenden R. Ortiz, Anuj Goyal, Duanfeng Gao, Scott A. Barnett, Thomas O. Mason, G. Jeffrey Snyder, Qin Lv, Vladan Stevanović, Eric S. Toberer*

*Corresponding author for this work

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

High-throughput, low-cost, and accurate predictions of thermal properties of new materials would be beneficial in fields ranging from thermal barrier coatings and thermoelectrics to integrated circuits. To date, computational efforts for predicting lattice thermal conductivity (κL) have been hampered by the complexity associated with computing multiple phonon interactions. In this work, we develop and validate a semiempirical model for κL by fitting density functional theory calculations to experimental data. Experimental values for κL come from new measurements on SrIn2O4, Ba2SnO4, Cu2ZnSiTe4, MoTe2, Ba3In2O6, Cu3TaTe4, SnO, and InI as well as 55 compounds from across the published literature. To capture the anharmonicity in phonon interactions, we incorporate a structural parameter that allows the model to predict κL within a factor of 1.5 of the experimental value across 4 orders of magnitude in κL values and over a diverse chemical and structural phase space, with accuracy similar to or better than that of computationally more expensive models.

Original languageEnglish (US)
Pages (from-to)2494-2501
Number of pages8
JournalChemistry of Materials
Volume29
Issue number6
DOIs
StatePublished - Mar 28 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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