Abstract
The pulsed synchrotron radiation from the Advanced Photon Source at Argonne National Laboratory was used to stroboscopically measure the dynamic response of BaTiO 3 ferroelectric films, in situ , under the application of a high-frequency electric field. The time-dependent lattice d -spacings measured in the frequency range, 25-1300 MHz, demonstrated both periodicity and attenuation features which were attributed to domain dynamics. Drastic (two order of magnitude) reduction of the relaxation time (i.e., attenuation increase) was found with increasing electric field frequency. Experimental findings are analyzed in terms of hindering of domain wall motion by generated deformation waves.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 115-124 |
| Number of pages | 10 |
| Journal | Ferroelectrics |
| Volume | 290 |
| DOIs | |
| State | Published - Jun 1 2003 |
Funding
This work was performed at the DuPont-Northwestern-Dow Collaborative Access Team (DND-CAT) Synchrotron Research Center located at Sector 5 of the Advanced Photon Source. DND-CAT is supported by the E. I. DuPont de Nemours & Co., the Dow Chemical Company, the U.S. National Science Foundation through grant DMR-9304725 and the State of Illinois through the Department of Commerce and the Board of Higher Education grant IBHE HECA NWU 96. Use of the Advanced Photon Source was supported by the U.S. Department of Energy, Basic Energy Sciences, Office of Energy Research under contract No. W-31-102-Eng-38. We would like to acknowledge financial support of the U.S. National Science Foundation under grant DMR-0076077 and ECS-0123469. We thank J. Kulpin for his help in part of synchrotron measurements.
Keywords
- Domain dynamics
- Electric field
- Relaxation processes
- Time-resolved measurements
- X-ray diffraction
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics