Interface‐Induced Modulation of Charge and Polarization in Thin Film Fe3O4. (25th October 2013)

• Record Type: Journal Article
• Authors: Tian, He; Verbeeck, Jo; Brück, Sebastian; Paul, Markus; Kufer, Dominik; Sing, Michael; Claessen, Ralph; Tendeloo, Gustaaf Van
• Is Part Of: Advanced materials. Volume 26:Number 3(2014)
• Page Start: 461
• Page End: 465
• Publication Date: 2013-10-25
• Subjects: charge modulation -- polarization modulation -- oxide interface -- ABF STEM -- monochromated EELS; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201303329
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : Charge and polarization modulations in Fe3 O4 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.