Piezoresponse Force Microscopy contrast in transversally isotropic material corresponding to the case of c+ - c- domains in tetragonal ferroelectrics is analyzed using Green's function theory by Felten et al. [J. Appl. Phys. 96, 563 (2004)]. A simplified expression for PFM signal as a linear combination of relevant piezoelectric constant are obtained. This analysis is extended to piezoelectric material of arbitrary symmetry with weak elastic and dielectric anisotropies. This result provides a framework for interpretation of PFM signals for systems with unknown or poorly known local elastic and dielectric properties, including nanocrystalline materials, ferroelectric polymers, and biopolymers.
Cite
@article{arxiv.cond-mat/0603010,
title = {Materials Contrast in Piezoresponse Force Microscopy},
author = {Sergei V. Kalinin and Eugene A. Eliseev and Anna N. Morozovska},
journal= {arXiv preprint arXiv:cond-mat/0603010},
year = {2009}
}
Comments
20 pages, 3 figures, 1 table, accepted to Appl. Phys. Lett. (without Appendices), algebraic errors were corrected