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Author He, Q. ♦ Chu, Y. H. ♦ Heron, J. T. ♦ Yang, S. Y. ♦ Kuo, C. Y. ♦ Lin, H. J. ♦ Yu, P. ♦ Liang, C. W. ♦ Zeches, R. J. ♦ Chen, C. T. ♦ Ramesh, R.
Sponsorship Advanced Light Source Division ♦ Materials Sciences Division
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
File Format PDF
Language English
Subject Keyword ELECTRIC FIELDS ♦ ELECTRON MICROSCOPY ♦ MAGNETIC CIRCULAR DICHROISM ♦ MAGNETIC MOMENTS ♦ MAGNETISM ♦ MAGNETIZATION ♦ MICROSCOPY ♦ NANOSTRUCTURES ♦ PHOTOEMISSION
Abstract The emergence of enhanced spontaneous magnetic moments in self-assembled, epitaxial nanostructures of tetragonal (T-phase) and rhombohedral phases (R-phase) of the multiferroic BiFeO{sub 3} system is demonstrated. X-ray magnetic circular dichroism based photoemission electron microscopy (PEEM) was applied to investigate the local nature of this magnetism. We find that the spontaneous magnetization of the R-phase is significantly enhanced above the canted antiferromagnetic moment in the bulk phase, as a consequence of a piezomagnetic coupling to the adjacent T-phase and the epitaxial constraint. Reversible electric field control and manipulation of this magnetic moment at room temperature is shown using a combination of piezoresponse force microscopy and PEEM studies.
Educational Use Research
Learning Resource Type Article
Publisher Date 2010-08-02
Publisher Place United States
Journal Nature Communications
Technical Publication No. LBNL-4511E
Organization Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)


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