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Journal article
Towards 3D Mapping of BO6 Octahedron Rotations at Perovskite Heterointerfaces, Unit Cell by Unit Cell
ACS nano, v 9(8), pp 8412-8419
01 Aug 2015
PMID: 26174591
Abstract
The rich functionalities in the ABO(3) perovskite oxides originate, at least in part, from the ability of the corner-connected BO6 octahedral network to host a large variety of cations through distortions and rotations. Characterizing these rotations, which have significant impact on both fundamental aspects of materials behavior and possible applications, remains a major challenge at heterointerfaces. In this work, we have developed a unique method to investigate BO6 rotation patterns in complex oxides ABO(3) with unit cell resolution at heterointerfaces, where novel properties often emerge. Our method involves column shape analysis in ABF-STEM images of the ABO(3) heterointerfaces taken in specific orientations. The rotating phase of BO6 octahedra can be identified for all three spatial dimensions without the need of case-by-case simulation. In several common rotation systems, quantitative measurements of all three rotation angles are now possible. Using this method, we examined interfaces between perovskites with distinct tilt systems as well as interfaces between tilted and untilted perovskites, identifying an unusual coupling behavior at the CaTiO3/LSAT interface. We believe this method will significantly improve our knowledge of complex oxide heterointerfaces.
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Details
- Title
- Towards 3D Mapping of BO6 Octahedron Rotations at Perovskite Heterointerfaces, Unit Cell by Unit Cell
- Creators
- Qian He - Oak Ridge Natl Lab, Dept Mat Sci & Technol, Oak Ridge, TN 37831 USARyo Ishikawa - University of TokyoAndrew R. Lupini - Oak Ridge Natl Lab, Dept Mat Sci & Technol, Oak Ridge, TN 37831 USALiang Qiao - Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USAEun J. Moon - Drexel UniversityOleg Ovchinnikov - Vanderbilt UniversitySteven J. May - Drexel UniversityMichael D. Biegalski - Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USAAlbina Y. Borisevich - Oak Ridge Natl Lab, Dept Mat Sci & Technol, Oak Ridge, TN 37831 USAOak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Details
- ACS nano, v 9(8), pp 8412-8419
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 8
- Grant note
- ORNL's Laboratory Directed Research and Development (LDRD) fund U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division; United States Department of Energy (DOE) W911NF-12-1-0132 / US Army Research Office Scientific User Facilities Division, Office of Science, Basic Energy Sciences, U.S. Department of Energy; United States Department of Energy (DOE) JSPS; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science DE-AC02-05CH11231 / Office of Science of the U.S. DOE; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000360323300071
- Scopus ID
- 2-s2.0-84940055811
- Other Identifier
- 991019167809004721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology