Structure, magnetic, and electronic properties in epitaxial Ca<sub>1-x</sub>Sr<sub>x</sub>Mn<sub>7</sub>O<sub>12</sub> films
ORAL
Abstract
The quadruple perovskite CaMn7O12 has garnered attention over the years due to the interesting physics in this unique crystal structure. Mn ions are simultaneously present on both the A- and B-site, with both Mn3+ and Mn4+ ions on the B-site. Due to the presence of different sites of the Mn ions in this complex oxide, this perovskite exhibits an array of collectively ordered states: spin, orbital, charge, and lattice. Here, we present a detailed study on the synthesis of epitaxially grown Ca1-xSrxMn7O12 thin films by utilizing x-ray diffraction, neutron diffraction, transport, and magnetometry approaches to understand the underlying physics present in the magnetic and electronic properties. This talk will focus on how the charge-ordering and magnetic-ordering transitions are altered through Sr doping (x) and due to the influence of growth parameters.
*This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Technology Division and Scientific User Facilities and by the Army Research Office (W911NF-15-1-0133).
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Presenters
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Amanda Huon
- Drexel University