التفاصيل البيبلوغرافية
| العنوان: |
Informatics-Based Learning of Oxygen Vacancy Ordering Principles in Oxygen-Deficient Perovskites. |
| المؤلفون: |
Shin Y; Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States., Poeppelmeier KR; Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States., Rondinelli JM; Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States. |
| المصدر: |
Inorganic chemistry [Inorg Chem] 2024 Jul 15; Vol. 63 (28), pp. 12785-12802. Date of Electronic Publication: 2024 Jul 02. |
| نوع المنشور: |
Journal Article |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: American Chemical Society Country of Publication: United States NLM ID: 0366543 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1520-510X (Electronic) Linking ISSN: 00201669 NLM ISO Abbreviation: Inorg Chem Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: |
Original Publication: [Easton, Pa.] American Chemical Society. |
| مستخلص: |
Ordered oxygen vacancies (OOVs) in perovskites can exhibit long-range order and may be used to direct materials properties through modifications in electronic structures and broken symmetries. Based on the various vacancy patterns observed in previously known compounds, we explore the ordering principles of oxygen-deficient perovskite oxides with AB O 2.5 stoichiometry to identify other OOV variants. We performed first-principles calculations to assess the OOV stability on a data set of 50 OOV structures generated from our bespoke algorithm. The algorithm employs uniform planar vacancy patterns on (111) pseudocubic perovskite layers and the approach proves effective for generating stable OOV patterns with minimal computational loads. We find as expected that the major factors determining the stability of OOV structures include coordination preferences of transition metals and elastic penalties resulting from the assemblies of polyhedra. Cooperative rotational modes of polyhedra within the OOV structures reduce elastic instabilities by optimizing the bond valence of A - and B cations. This finding explains the observed formation of vacancy channels along low-index crystallographic directions in prototypical OOV phases. The identified ordering principles enable us to devise other stable vacancy patterns with longer periodicity for targeted property design in yet to be synthesized compounds. |
| تواريخ الأحداث: |
Date Created: 20240702 Latest Revision: 20240715 |
| رمز التحديث: |
20240715 |
| DOI: |
10.1021/acs.inorgchem.4c01198 |
| PMID: |
38954760 |
| قاعدة البيانات: |
MEDLINE |
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