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Journal article
Polar Cation Ordering: A Route to Introducing > 10% Bond Strain Into Layered Oxide Films
Advanced functional materials, v 24(43), pp 6884-6891
19 Nov 2014
Abstract
The 3d transition metal (M) perovskite oxides exhibit a remarkable array of properties, including novel forms of superconductivity, magnetism and multi-ferroicity. Strain can have a profound effect on many of these properties. This is due to the localized nature of the M 3d orbitals, where even small changes in the M-O bond lengths and M-O-M bond angles produced by strain can be used to tune the 3d-O 2p hybridization, creating large changes in electronic structure. A new route is presented to strain the M-O bonds in epitaxial two-dimensional perovskite films by tailoring local electrostatic dipolar interactions within every formula unit via atomic layer-by-layer synthesis. The response of the O anions to the resulting dipole electric fields distorts the M-O bonds by more than 10%, without changing substrate strain or chemical composition. This distortion is largest for the apical oxygen atoms (O-ap), and alters the transition metal valence state via self-doping without chemical substitution.
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Details
- Title
- Polar Cation Ordering: A Route to Introducing > 10% Bond Strain Into Layered Oxide Films
- Creators
- Brittany B. Nelson-Cheeseman - Argonne National LaboratoryHua Zhou - Argonne National LaboratoryPrasanna V. Balachandran - Drexel UniversityGilberto Fabbris - Argonne National LaboratoryJason Hoffman - Argonne National LaboratoryDaniel Haskel - Argonne National LaboratoryJames M. Rondinelli - Drexel UniversityAnand Bhattacharya - Argonne National LaboratoryArgonne National Lab. (ANL), Argonne, IL (United States)
- Publication Details
- Advanced functional materials, v 24(43), pp 6884-6891
- Publisher
- Wiley
- Number of pages
- 8
- Grant note
- DE-AC02-06CH11357 / U.S. Department of Energy, Office of Basic Energy Sciences; United States Department of Energy (DOE) N66001-12-4224; W911NF-12-1-0133 / DARPA; United States Department of Defense; Defense Advanced Research Projects Agency (DARPA)
- Resource Type
- Journal article
- Language
- English
- Web of Science ID
- WOS:000345225800016
- Scopus ID
- 2-s2.0-85027951044
- Other Identifier
- 991019330914004721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter