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Hematite α-Fe.sub.2./sub.O.sub.3./sub.(0001) in top and side view: resolving long-standing controversies about its surface structure
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SYSNO ASEP 0583874 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Hematite α-Fe2O3(0001) in top and side view: resolving long-standing controversies about its surface structure Author(s) Redondo, J. (CZ)
Michalička, J. (CZ)
Kraushofer, F. (AT)
Franceschi, G. (AT)
Šmid, B. (CZ)
Kumar, N. (CZ)
Man, O. (CZ)
Blatnik, M. (CZ)
Wrana, D. (PL)
Mallada Faes, Benjamin Jose (FZU-D) ORCID, RID
Švec, Martin (FZU-D) RID, ORCID
Parkinson, G.S. (AT)
Setvín, M. (CZ)
Riva, M. (AT)
Diebold, U. (AT)
Čechal, J. (CZ)Number of authors 16 Article number 2300602 Source Title Advanced Materials Interfaces. - : Wiley - ISSN 2196-7350
Roč. 10, č. 32 (2023)Number of pages 9 s. Language eng - English Country US - United States Keywords iron oxide ; nc-AFM ; surface structure ; TEM ; XPS Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects LM2018110 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2023051 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 001159240100001 EID SCOPUS 85168394306 DOI 10.1002/admi.202300602 Annotation The atomic-scale structure of the hematite surface remains controversial despite decades of study, partly because it depends on sample history as well as the preparation conditions. Here, a comprehensive study is performed using an arsenal of surface techniques (non-contact atomic force microscopy, scanning tunneling microscopy, low-energy electron diffraction, and X-ray photoemission spectroscopy) complemented by analyses of the near surface region by high-resolution transmission electron microscopy and electron energy loss spectroscopy. The results show that the so-called “bi-phase” termination forms even under highly oxidizing conditions, a (1 × 1) surface is only observed in the presence of impurities. Furthermore, it is shown that the biphase is actually a continuous layer distorted due to a mismatch with the subsurface layers, and thus not the proposed mixture of FeO(111) and α-Fe2O3(0001) phases. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2024 Electronic address https://hdl.handle.net/11104/0351870
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