Print Email Facebook Twitter Evidence of non-Dzyaloshinskii–Moriya ferromagnetism in epitaxial BiFeO3 films Title Evidence of non-Dzyaloshinskii–Moriya ferromagnetism in epitaxial BiFeO3 films Author Prokhorov, V.G. Kaminsky, G.G. Kim, J.M. Eom, T.W. Park, J.S. Lee, Y.P. Svetchnikov, V.L. Levtchenko, G.G. Nikolaenko, Y.M. Khokhlov, V.A. Faculty Applied Sciences Date 2011-02-28 Abstract X-ray diffraction analysis and high-resolution electron microscopy of BiFeO3 films prepared by dc magnetron sputtering on single-crystal LaAlO3 (001) substrates reveal that the films have a highly c-oriented orthorhombic crystalline structure. The magnetic properties of the BiFeO3 films are typical of ensembles of interacting superparamagnetic clusters, rather than Dzyaloshinskii-Moriya weak ferromagnets. The appearance of extrinsic nanoscale superparamagnetic clusters is explained by an oxygen deficiency in certain regions of the film, where ferromagnetic ordering can be realized through a double-exchange Zener mechanism. Subject bismuth compoundscrystal structureferromagnetic materialsmagnetic epitaxial layerssputter depositionsuperparamagnetismX-ray diffractionZener effect To reference this document use: http://resolver.tudelft.nl/uuid:c8d3777f-552b-4e2b-bc45-1966f766fd63 DOI https://doi.org/10.1063/1.3555838 Publisher American Institute of Physics ISSN 1063-777X Source http://link.aip.org/link/doi/10.1063/1.3555838 Source Low Temperature Physics, 37 (2), 2011 Part of collection Institutional Repository Document type journal article Rights © 2011 The Author(s)American Institute of Physics Files PDF Svetchnikov2_2011.pdf 522.44 KB Close viewer /islandora/object/uuid:c8d3777f-552b-4e2b-bc45-1966f766fd63/datastream/OBJ/view