Abstract
Different stages of polarization reversal in a Pb(Zr,Ti)O3 ferroelectric film have been directly observed using a technique of cross-sectional piezoelectric force imaging. Analysis of the local piezoelectric response measured across the cross section strongly suggests that polarization reversal occurs via oblique domain growth rather than by growth of domains perpendicular to the film plane. The proposed approach represents a valuable extension to the piezoelectric force microscopy (PFM) and contributes to a better understanding of results observed using more standard techniques. Particularly, oblique domain growth explains the gradual variation of piezoelectric response amplitude commonly observed in planar PFM images.
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