Nanosecond-Scale Domain Dynamics in BaTiO3 Probed by Time-Resolved X-Ray Diffraction
E. Zolotoyabko*, J. P. Quintana**, D.J.Towner***, B. H. Hoerman*** and B. W. Wessels***
Ferroelectrics. 290 115 (2003).
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Abstract:
The pulsed synchrotron radiation from the Advanced Photon Source at Argonne National
Laboratory was used to stroboscopically measure the dynamic response of BaTiO3 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.
Addresses:
* Department of Materials Engineering, Technion–Israel
Institute of Technology, Haifa 32000, Israel
** DND–CAT Research Center, Northwestern University, APS/ANL
Sector 5, Building 432A, 9700 South Cass Avenue, Argonne,
Illinois 60439-4857
*** Department of Materials Science and Engineering, Northwestern
University, Evanston, Illinois 60208