Abstract
Recent studies have highlighted the collective rotations of corner-shared oxygen octahedra in ABO3 functional perovskite oxides. However, experimental methods that allow direct measurements of oxygen octahedra, especially for the multilayer containing different types of oxygen octahedral rotations in each layer, are still rare. In this report, the correlation between oxygen octahedral rotation and cation-lattice symmetry is discussed by studying the interface-engineered perovskite La2/3Sr1/3MnO3 layers. The out-of-phase octahedral rotations remove the orthogonality between corresponding axes of the cation lattice, leading to the asymmetric diffraction pattern recorded by the reciprocal space mapping. More importantly, in the La2/3Sr1/3MnO3-multilayer heterostructure, the reciprocal space mapping can identify different octahedral rotations for each La2/3Sr1/3MnO3 layer, explaining the appearance of multiple Curie temperatures and coercive fields. Our results reveal the new understanding of the old reciprocal space mapping-based technique, based on the correlation between oxygen octahedral rotation and cation-lattice symmetry. The application of reciprocal space mapping to the La2/3Sr1/3MnO3-multilayers not only showcases the advantage of this technique but also extends our understanding of oxygen octahedral rotation to the more complicated oxide heterostructures.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.