Ferroelectric domain wall dynamics characterized with X-ray photon correlation spectroscopy
Abstract
The dynamics in many complex systems is essentially heterogeneous and involves a series of discrete events—in particular, local structural changes. The nature and scale of these changes may vary greatly, ranging from rearrangements of atomic positions during phase transitions to displacements of tectonic plates during earthquakes. In this work, we introduce X-ray photon correlation spectroscopy (XPCS) as a powerful tool for investigating heterogeneous dynamics of interfaces. We observe the motion of ferroelectric domain walls by means of XPCS and obtain the information about nanoscale changes, which is inaccessible for other techniques. Further experiments can provide important insights into the mechanisms of unusual properties of materials such as anomalously large piezoelectric response in relaxor-based ferroelectrics and magnetoelectric coupling in multiferroics.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 03, 2018
- Source ID
- 10.1073/pnas.1720991115
Entities
People
- Alexei A Bokov
- Alexey V. Zozulya
- Arman Davtyan
- Christian Gutt
- Mario Reiser
- Michael Sprung
- Semen Gorfman
- Ullrich Pietsch
- Yujuan Xie
- Zuo-Guang Ye
Organizations
- DESY
- European XFEL
- Federal Ministry of Research, Technology and Space
- Natural Sciences and Engineering Research Council
- Office of Naval Research
- Simon Fraser University
- Tel Aviv University
- University of Siegen