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Abstract
The contrast mechanism for ferroelectric domain imaging via piezoresponse force microscopy
(PFM) is investigated. A novel analysis of PFM measurements is presented which takes
into account the background caused by the experimental setup. This allows, for the
first time, a quantitative, frequency independent analysis of the domain contrast
which is in good agreement with the expected values for the piezoelectric deformation
of the sample and satisfies the generally required features of PFM imaging.