Abstract
The ferroelectric domain structure of a PbTiO3 thin film on (100) SrTiO3 has been investigated by transmission electron microscopy (TEM). Two types of a-domain were found: one extended through the film to the surface and another comprised small a-domains confined within the film. Dark-field TEM (DFTEM) observation revealed that 180° domains formed near the substrate and stopped their growth 100 nm away from the substrate. The DFTEM observation also revealed that 90° domain boundaries had head-to-tail structures. To confirm the polarization direction obtained by experiments, diffracted intensities under a two-beam condition were simulated using the extended Darwin-Howie-Whelan equations. On the basis of the obtained results, a ferroelectric domain structure model of PbTiO3 thin films on SrTiO3 is proposed.
Original language | English |
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Article number | 034403 |
Journal | Science and Technology of Advanced Materials |
Volume | 12 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2011 Jun |
Keywords
- Ferroelectric thin film
- PbTiO3
- TEM
ASJC Scopus subject areas
- Materials Science(all)