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

Nath, Ramesh; Hong, Seungbum; Klug, Jeffrey A.; Imre, Alexandra; Bedzyk, Michael J.; Katiyar, Ram S.; Auciello, Orlando
April 2010
Applied Physics Letters;4/19/2010, Vol. 96 Issue 16, p163101
Academic Journal
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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