Abstract
Band excitation piezoresponse force microscopy enables local investigation of the nonlinear piezoelectric behavior of ferroelectric thin films. However, the presence of additional nonlinearity associated with the dynamic resonant response of the tip-surface junction can complicate the study of a material's nonlinearity. Here, the relative importance of the two nonlinearity sources was examined as a function of the excitation function. It was found that in order to minimize the effects of nonlinear tip-surface interactions but achieve good signal to noise level, an optimal excitation function must be used.
Original language | English |
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Article number | 212901 |
Journal | Applied Physics Letters |
Volume | 98 |
Issue number | 21 |
DOIs | |
State | Published - May 23 2011 |
Funding
Support for this work was provided in part by the National Security Science and Engineering Faculty Fellowship and by CNMS user Proposal No. CNMS2010-090 (F.G. and S.T.M.). A portion of this research was conducted at the Center for Nanophase Materials Sciences, which is sponsored at Oak Ridge National Laboratory by the Office of Basic Energy Sciences, U.S. Department of Energy under contract DE-AC05-00OR22725. Thanks to Oleg Ovchinnikov for useful discussions on MATLAB coding.
Funders | Funder number |
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National Security Science and Engineering | CNMS2010-090 |
U.S. Department of Energy | DE-AC05-00OR22725 |
Basic Energy Sciences | |
Oak Ridge National Laboratory |