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Ferroelectric domain structures in SrBi2Nb2O9 epitaxial thin films: Electron microscopy and phase-field simulations
| Content Provider | Semantic Scholar |
|---|---|
| Author | Li, Yulan Chen, Liqing Asayama, G. Schlom, Darrell G. Zurbuchen, Mark A. Streiffer, Stephen K. |
| Copyright Year | 2004 |
| Abstract | Ferroelectric domain structures of (001)SrBi2Nb2O9 epitaxial films, investigated using both transmission electron microscopy and phase-field simulations, are reported. Experiment and numerical simulation both reveal that the domain structures consist of irregularly shaped domains with curved domain walls. It is shown that the elastic contribution to domain structures can be neglected in SrBi2Nb2O9 due to its small ferroelastic distortion, less than 0.0018%. Two-beam dark-field imaging using reflections unique to domains of each of the two 90° polarization axes reveal the domain structure. Phase-field simulation is based on the elastic and electrostatic solutions obtained for thin films under different mechanical and electric boundary conditions. The effects of ferroelastic distortion and dielectric constant on ferroelectric domains are systematically analyzed. It is demonstrated that electrostatic interactions which favor straight domain walls are not sufficient to overcome the domain wall energy which fa... |
| Starting Page | 6332 |
| Ending Page | 6340 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| DOI | 10.1063/1.1707211 |
| Volume Number | 95 |
| Alternate Webpage(s) | https://www.ems.psu.edu/~chen/publications/YLLi2004JAP_SrBiNbO.pdf |
| Alternate Webpage(s) | http://schlom.mse.cornell.edu/sites/schlom.mse.cornell.edu/files/research%20pdfs/%23274.pdf |
| Alternate Webpage(s) | https://doi.org/10.1063/1.1707211 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
