131835 20241125101139.0 doi 10.1002/admi.202300639 sideral 137022 ART-2023-137022 eng Atul, Atul Strong substrate influence on atomic structure and properties of epitaxial VO2 thin films 2023 Access copy available to the general public Unrestricted The metal–insulator transition (MIT) observed in vanadium dioxide has been a topic of great research interest for past decades, with the underlying physics yet not fully understood due to the complex electron interactions and structures involved. The ability to understand and tune the MIT behavior is of vital importance from the perspective of both underlying fundamental science as well as potential applications. In this work, scanning transmission electron microscopy (STEM) is used to investigate cross‐section lamella of the VO2 films deposited using pulsed laser deposition on three substrates: c‐cut sapphire, TiO2(101) and TiO2(001). Advanced STEM imaging is performed in which also the oxygen atom columns are resolved. The overall film quality and structures on atomic and nanoscale are linked to the electrical transition characteristics. Relatively poor MIT characteristics are observed on c‐sapphire due to the presence of very small domains with six orientation variants, and on TiO2 (001) due to the presence of cracks induced by stress relaxation. However, the MIT on TiO2 (101) behaves favorably, despite similar stress relaxation which, however, only leads to domain boundaries but no cracks. info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 4.3 2023 CHEMISTRY, MULTIDISCIPLINARY 72 / 231 = 0.312 2023 Q2 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 153 / 439 = 0.349 2023 Q2 T2 1.194 2023 Mechanics of Materials 2023 Q1 Mechanical Engineering 2023 Q1 8.4 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Ahmadi, Majid Koutsogiannis, Panagiotis Zhang, Heng Kooi, Bart J. 11, 3 (2023), 2300639 [13 pp.] Adv. mater. interfaces Advanced Materials Interfaces 2196-7350 13820658 http://zaguan.unizar.es/record/131835/files/texto_completo.pdf Versión publicada 2999468 http://zaguan.unizar.es/record/131835/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:131835 articulos driver 2024-11-22-12:01:53 ARTICLE