{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,11]],"date-time":"2025-12-11T20:58:43Z","timestamp":1765486723803,"version":"build-2065373602"},"reference-count":34,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2022,2,25]],"date-time":"2022-02-25T00:00:00Z","timestamp":1645747200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the European Union's Horizon 2020 research and innovation program","award":["No. 823717-ESTEEM3"],"award-info":[{"award-number":["No. 823717-ESTEEM3"]}]},{"name":"the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)","award":["TRR 80 - project G1."],"award-info":[{"award-number":["TRR 80 - project G1."]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>The NdNiO3 (NNO) system has attracted a considerable amount of attention owing to the discovery of superconductivity in Nd0.8Sr0.2NiO2. In rare-earth nickelates, Ruddlesden\u2013Popper (RP) faults play a significant role in functional properties, motivating our exploration of its microstructural characteristics and the electronic structure. Here, we employed aberration-corrected scanning transmission electron microscopy and spectroscopy to study a NdNiO3 film grown by layer-by-layer molecular beam epitaxy (MBE). We found RP faults with multiple configurations in high-angle annular dark-field images. Elemental intermixing occurs at the SrTiO3\u2013NdNiO3 interface and in the RP fault regions. Quantitative analysis of the variation in lattice constants indicates that large strains exist around the substrate\u2013film interface. We demonstrate that the Ni valence change around RP faults is related to a strain and structure variation. This work provides insights into the microstructure and electronic-structure modifications around RP faults in nickelates.<\/jats:p>","DOI":"10.3390\/sym14030464","type":"journal-article","created":{"date-parts":[[2022,2,27]],"date-time":"2022-02-27T20:49:03Z","timestamp":1645994943000},"page":"464","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Ruddlesden\u2013Popper Faults in NdNiO3 Thin Films"],"prefix":"10.3390","volume":"14","author":[{"given":"Chao","family":"Yang","sequence":"first","affiliation":[{"name":"Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany"}]},{"given":"Yi","family":"Wang","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany"},{"name":"Center for Microscopy and Analysis, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China"}]},{"given":"Daniel","family":"Putzky","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany"}]},{"given":"Wilfried","family":"Sigle","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany"}]},{"given":"Hongguang","family":"Wang","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7812-0123","authenticated-orcid":false,"given":"Roberto A.","family":"Ortiz","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany"}]},{"given":"Gennady","family":"Logvenov","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7638-2282","authenticated-orcid":false,"given":"Eva","family":"Benckiser","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany"}]},{"given":"Bernhard","family":"Keimer","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1890-1256","authenticated-orcid":false,"given":"Peter A.","family":"van Aken","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany"}]}],"member":"1968","published-online":{"date-parts":[[2022,2,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"624","DOI":"10.1038\/s41586-019-1496-5","article-title":"Superconductivity in an infinite-layer nickelate","volume":"572","author":"Li","year":"2019","journal-title":"Nature"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"041107","DOI":"10.1063\/5.0005103","article-title":"Aspects of the synthesis of thin film superconducting infinite-layer nickelates","volume":"8","author":"Lee","year":"2020","journal-title":"APL Mater."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"027001","DOI":"10.1103\/PhysRevLett.125.027001","article-title":"Superconducting Dome in Nd1\u2212xSrxNiO2 Infinite Layer Films","volume":"125","author":"Li","year":"2020","journal-title":"Phys. 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