Effect of Interfacial Octahedral Behavior in Ultrathin Manganite Films
| Autor: | Brian J. Kirby, James M. Rondinelli, R. J. Sichel-Tissot, Evguenia Karapetrova, Xuemei Cheng, Steven J. May, Eun Ju Moon, David Keavney, Christian M. Schlepütz, Prasanna V. Balachandran |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Condensed matter physics Mechanical Engineering Oxide Bioengineering Heterojunction General Chemistry Condensed Matter Physics Manganite Epitaxy chemistry.chemical_compound Magnetization Octahedron chemistry Electrical resistivity and conductivity General Materials Science Orthorhombic crystal system |
| Zdroj: | Nano Letters. 14:2509-2514 |
| ISSN: | 1530-6992 1530-6984 |
| DOI: | 10.1021/nl500235f |
| Popis: | We investigate structural coupling of the MnO6 octahedra across a film/substrate interface and the resultant changes of the physical properties of ultrathin La2/3Sr1/3MnO3 (LSMO) films. In order to isolate the effect of interfacial MnO6 octahedral behavior from that of epitaxial strain, LSMO films are grown on substrates with different symmetry and similar lattice parameters. Ultrathin LSMO films show an increased magnetization and electrical conductivity on cubic (LaAlO3)0.3(Sr2AlTaO6)0.7 (LSAT) compared to those grown on orthorhombic NdGaO3 (NGO) substrates, an effect that subsides as the thickness of the films is increased. This study demonstrates that interfacial structural coupling can play a critical role in the functional properties of oxide heterostructures. |
| Databáze: | OpenAIRE |
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