Abstract
A three-layer Zr0.8Sc0.2O1.9/Ce0.9Gd0.1O1.95/Pr2CuO4 heterosystem has been studied by the molecular dynamics method in a computational cell ∼110 × 110 × 470 Å3 in size. It is shown that the main crystallographic characteristics are retained for all layers. It follows from the analysis of pair correlation functions that all oxide phases in the heterosystem exhibit oxygen sublattice disorder, which is especially pronounced in zirconium and cerium oxides. The calculated values of layer-by-layer oxygen diffusion coefficients, as well as the diffusion activation energies, are compared with the data of both direct physical and computer experiments. Individual paths of oxygen anion jumps through the Zr0.8Sc0.2O1.9/Ce0.9Gd0.1O1.95 and Ce0.9Gd0.1O1.95/Pr2CuO4 interfaces are traced.
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This study was supported in part by the Russian Foundation for Basic Research, project no. 17-03-00650.
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Gotlib, I.Y., Ivanov-Schitz, A.K. & Murin, I.V. Computer Simulation of the Complex Interface of a Solid-Oxide Fuel Cell: Three-Layer Zr0.8Sc0.2O1.9|Ce0.9Gd0.1O1.95|Pr2CuO4 Heterosystem. Crystallogr. Rep. 67, 937–943 (2022). https://doi.org/10.1134/S1063774522060086
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DOI: https://doi.org/10.1134/S1063774522060086