The structural evolution of epitaxial mono-oriented (i.e. with the c-axis perpendicular to the interface) ferroelectric Pb(Zr0.2,Ti0.8)O3 thin film has been investigated, using high resolution, temperature dependent, X-ray diffraction. The full set of lattice parameters was obtained, it allowed to estimate the variation of the polarization as a function of temperature, underlying the difference between the polarization-induced tetragonality and the elastic one. The temperature evolution of the misfit strain has been calculated and found to be in good agreement with the theoretical temperature-misfit strain phase diagram
@article{arxiv.0705.3354,
title = {Partial decoupling between strain and polarization in mono-oriented Pb(Zr0.2Ti0.8)O3 thin film},
author = {Pierre-Eymeric Janolin and Bernard Fraisse and Francoise Le Marrec and Brahim Dkhil},
journal= {arXiv preprint arXiv:0705.3354},
year = {2009}
}