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Effects of cantilever buckling on vector piezoresponse force microscopy imaging of ferroelectric domains in BiFeO3 nanostructures

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7 Author(s)
Nath, Ramesh ; Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA ; Hong, Seungbum ; Klug, Jeffrey A. ; Imre, Alexandra
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Systematic studies are presented on the effects of cantilever buckling in vector piezoresponse force microscopy (V-PFM) imaging of polarization domains in thin-film based (001)-oriented BiFeO3 nanostructures, as observed through the coupling of out-of-plane and in-plane PFM images. This effect is a strong function of the laser spot position on the cantilever, being strongest at the free end, and insignificant at 60% of the cantilever length from the pivot point. This finding provides a unique approach to V-PFM imaging of ferroelectric polarization domains, yielding three dimensional PFM images without sample rotation in the plane.

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Applied Physics Letters  (Volume:96 ,  Issue: 16 )