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He Tian, Jo Verbeeck, Sebastian Brück, Markus Paul, Dominik Kufer, Michael Sing, Ralph Claessen and Gustaaf Van Tendeloo Interface-Induced Modulation of Charge and Polarization in Thin Film Fe3O4 Advanced Materials 26

Article first published online: 25 OCT 2013 | DOI: 10.1002/adma.201303329

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Charge and polarization modulations in Fe3O4 are controlled by taking advantage of interfacial strain effects. The feasibility of oxidation state control by strain modification is demonstrated and it is shown that this approach offers a stable configuration at room temperature. Direct evidence of how a local strain field changes the atomic coordination and introduces atomic displacements leading to polarization of Fe ions is presented.

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