Boddu, V., Endres, F. and Steinmann, P. (2017) Non-Linear Switching Kinetics of Ferroelectric Mono-Domain Single Crystals. In: 8th Conference on Smart Structures and Materials, SMART 2017 and 6th International Conference on Smart Materials and Nanotechnology in Engineering, SMN 2017, Madrid, Spain, 5-8 June 2017,
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Abstract
Understanding the electric polarization switching kinetics in ferroelectric materials is critical to many applications such as fast high-density non-volatile random access memory devices. Experimental studies of the domain switching process in bulk and thin film ferroelectrics under an external electric loading have explained the switching kinetics using the Kolmogorov-Avrami-Ishibashi (KAI) model. The KAI model is based on the classical approach of nucleation and subsequent growth of reversed domains. It describes the time-dependent normalized change in polarization as a Lorentzian function. We perform molecular dynamics simulations to investigate the electric polarization switching kinetics of mono-domain ferroelectric BaTiO3 single crystals under external electric loading at room temperature using the core-shell model. In the core-shell model every ion is represented in terms of a charged core and a charged electron shell which introduces electronic polarizability in the ions. We study the polarization switching process with atomistic detail and discuss the applicability of the KAI model in explaining the non-linear polarization switching kinetics of mono-domain ferroelectric perfect single crystals.
| Item Type: | Conference Proceedings |
|---|---|
| Additional Information: | Volume 2017-January, 2017, Pages 1340-1346. The authors would like to thank the German Research Foundation (DFG) for the financial support under the research group project FOR 1509 Ferroic Functional Materials. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Steinmann, Professor Paul |
| Authors: | Boddu, V., Endres, F., and Steinmann, P. |
| College/School: | College of Science and Engineering > School of Engineering > Infrastructure and Environment |
| Journal Name: | 8th Conference on Smart Structures and Materials, SMART 2017 and 6th International Conference on Smart Materials and Nanotechnology in Engineering, SMN 2017 |
| Related URLs: |
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