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- W3144482316 abstract "Perovskites are just part of ABX <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3</sub> materials class, which are considered promising materials for renewable energy and many other applications. In order to perform applicable high-throughput computations for this class of materials, it is fundamentally important to identify the most stable structural phase, which is not necessarily perovskite class. Also, the method of structural optimization has to be adequately efficient and reliable to be employed in screening of vast materials space. In this work, we demonstrate an approach to identify highly stable structures of ABX <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3</sub> materials applied to CaTiO <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3</sub> and CsGeCl <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3</sub> using density functional theory (DFT) incorporated with the Standard Solid-State Pseudopotentials (SSSP) precision library and random sampling. First, supercells of each compound with 40 atoms are constructed in the ideal simple-cubic structure based on their Shannon's ionic radii. After that, we generated 10 supercells in the similar crystal symmetry. Then, these supercells are randomly distorted and are used as initial speculations to identify the stable structure of each compound. It is found that the highly stable structure of CaTiO <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3</sub> is perovskite in Pnma (#62) spacegroup while it is non-perovskite in P1 (#1) spacegroup for CsGeCl <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3</sub> ." @default.
- W3144482316 created "2021-04-13" @default.
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- W3144482316 date "2021-02-02" @default.
- W3144482316 modified "2023-09-27" @default.
- W3144482316 title "Identifying Highly Stable Structures of ABX3 Compounds: Cases of CaTiO3 and CsGeCl3 Perovskites" @default.
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- W3144482316 doi "https://doi.org/10.1109/icrega50506.2021.9388217" @default.
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