The influence of size effects on local piezoelectric response of thin films

A. N. Morozovska, V. Lashkaryov Institute of Semiconductor Physics, National Academy of Science of Ukraine 41, prospect Nauky, 03028 Kyiv, Ukraine, e-mail: morozo@i.com.ua
2008 Semiconductor Physics, Quantum Electronics & Optoelectronics  
We discuss the influence of size effects on the local piezoelectric response of thin films. In calculations of the electrostatic potential in the triple system "PFM probe tipfilm -substrate," the effective point charge model is used. The obtained expressions for the local piezoelectric response of a surface layer (film) capped are intended for the calculations of Piezoresponse Force Microscopy signals of thin polar films epitaxially grown on thick substrates. Theoretical predictions are in
more » ... ictions are in qualitative agreement with typical experimental results obtained for perovskite Pb(Zr , Ti)O 3 and multiferroic BiFeO 3 films.
doi:10.15407/spqeo10.04.036 fatcat:fvkbkr6z2vgmxnagwkxgkre6li