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- W3099152177 abstract "Using finite-temperature phonon calculations and machine-learning methods, we calculate the mechanical stability of about 400 semiconducting oxides and fluorides with cubic perovskite structures at 0 K, 300 K and 1000 K. We find 92 mechanically stable compounds at high temperatures -- including 36 not mentioned in the literature so far -- for which we calculate the thermal conductivity. We demonstrate that the thermal conductivity is generally smaller in fluorides than in oxides, largely due to a lower ionic charge, and describe simple structural descriptors that are correlated with its magnitude. Furthermore, we show that the thermal conductivities of most cubic perovskites decrease more slowly than the usual $T^{-1}$ behavior. Within this set, we also screen for materials exhibiting negative thermal expansion. Finally, we describe a strategy to accelerate the discovery of mechanically stable compounds at high temperatures." @default.
- W3099152177 created "2020-11-23" @default.
- W3099152177 creator A5006314784 @default.
- W3099152177 creator A5027398903 @default.
- W3099152177 creator A5043127515 @default.
- W3099152177 creator A5051115860 @default.
- W3099152177 creator A5073329819 @default.
- W3099152177 date "2016-12-21" @default.
- W3099152177 modified "2023-10-18" @default.
- W3099152177 title "High-Throughput Computation of Thermal Conductivity of High-Temperature Solid Phases: The Case of Oxide and Fluoride Perovskites" @default.
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