Point defects reduce lattice thermal conductivity in UN at low temperatures with uranium interstitials causing broadest scattering, while electronic contributions dominate above 600 K and match experiment when included, becoming negligible in defective cases.
First-Principles Investigation of the Effect of Vacancy Defects and Carbon Impurities on Thermal Conductivity of Uranium Mononitride (
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Thermal Transport in Defective Uranium Nitride: Effects of Point Defects, Anharmonicity, and Electronic Contributions
Point defects reduce lattice thermal conductivity in UN at low temperatures with uranium interstitials causing broadest scattering, while electronic contributions dominate above 600 K and match experiment when included, becoming negligible in defective cases.