Coherent magneto-elastic domains in multiferroic BiFeO3 films

A. Bombardi; C.-B. Eom; F. Maccherozzi; F. P. Chmiel; N. Waterfield Price; P. G. Radaelli; R. D. Johnson; S. S. Dhesi; W. Saenrang

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Coherent magneto-elastic domains in multiferroic BiFeO3 films

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arxiv 1512.05242 v3 pith:CFTET6UE submitted 2015-12-16 cond-mat.str-el cond-mat.mes-hall

N. Waterfield Price , R. D. Johnson , W. Saenrang , F. Maccherozzi , S. S. Dhesi , A. Bombardi , F. P. Chmiel , C.-B. Eom

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P. G. Radaelli

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classification cond-mat.str-elcond-mat.mes-hall

keywords bifeo3epitaxialfilmsbulkcoherentcrystalsdomainsmagnetic

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The physical properties of epitaxial films can fundamentally differ from those of bulk single crystals even above the critical thickness. By a combination of non-resonant x-ray magnetic scattering, neutron diffraction and vector-mapped x-ray magnetic linear dichroism photoemission electron microscopy, we show that epitaxial (111)-BiFeO3 films support sub-micron antiferromagnetic domains, which are magneto-elastically coupled to a coherent crystallographic monoclinic twin structure. This unique texture, which is absent in bulk single crystals, should enable control of magnetism in BiFeO3 film devices via epitaxial strain.

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