@article{3262096ede9a48f58e57a76f0f3c755c,
title = "Asymmetric Interfacial Intermixing Associated Magnetic Coupling in LaMnO3/LaFeO3 Heterostructures",
abstract = "The structural and magnetic properties of LaMnO3/LaFeO3 (LMO/LFO) heterostructures are characterized using a combination of scanning transmission electron microscopy, electron energy-loss spectroscopy, bulk magnetometry, and resonant x-ray reflectivity. Unlike the relatively abrupt interface when LMO is deposited on top of LFO, the interface with reversed growth order shows significant cation intermixing of Mn3+ and Fe3+, spreading ∼8 unit cells across the interface. The asymmetric interfacial chemical profiles result in distinct magnetic properties. The bilayer with abrupt interface shows a single magnetic hysteresis loop with strongly enhanced coercivity, as compared to the LMO plain film. However, the bilayer with intermixed interface shows a step-like hysteresis loop, associated with the separate switching of the “clean” and intermixed LMO sublayers. Our study illustrates the key role of interfacial chemical profile in determining the functional properties of oxide heterostructures.",
keywords = "asymmetric cation intermixing, enhanced magnetic coercivity, ferromagnetism, oxide interface, thin film growth, UT-Gold-D",
author = "Binbin Chen and Nicolas Gauquelin and Green, {Robert J.} and Johan Verbeeck and Guus Rijnders and Gertjan Koster",
note = "Funding Information: This work is supported by the international M-ERA.NET project SIOX (project 4288) and H2020 project ULPEC (project 732642). The X-Ant-EM microscope and the direct electron detector were partly funded by the Hercules fund from the Flemish Government. NG and JV acknowledge funding from GOA project “Solarpaint” of the University of Antwerp. RG was supported by the Natural Sciences and Engineering Research Funding Information: This work is supported by the international M-ERA.NET project SIOX (project 4288) and H2020 project ULPEC (project 732642). The X-Ant-EM microscope and the direct electron detector were partly funded by the Hercules fund from the Flemish Government. NG and JV acknowledge funding from GOA project ?Solarpaint? of the University of Antwerp. RG was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC). Part of the research described in this paper was performed at the Canadian Light Source, a national research facility of the University of Saskatchewan, which is supported by the Canada Foundation for Innovation (CFI), NSERC, the National Research Council (NRC), the Canadian Institutes of Health Research (CIHR), the Government of Saskatchewan, and the University of Saskatchewan. Publisher Copyright: Copyright {\textcopyright} 2021 Chen, Gauquelin, Green, Verbeeck, Rijnders and Koster. Financial transaction number: 342163771 ",
year = "2021",
month = dec,
day = "14",
doi = "10.3389/fphy.2021.698154",
language = "English",
volume = "9",
journal = "Frontiers in Physics",
issn = "2296-424X",
publisher = "Frontiers Research Foundation",
}