Choe, Hyeokmin: Dynamics of strain and domains in single crystal and ceramic ferroelectrics under an alternating electric field using stroboscopic time-resolved X-ray [...]. 2018
Content
- Abstract
- Zusammenfassung
- Table of Contents
- Chapter 1 Introduction – It is time to explore the exciting new world!
- 1.1. Motivation
- 1.2. Stroboscopic time-resolved diffraction methods
- 1.3. Structural dynamics study of strain and domains in ferroelectrics using stroboscopic time-resolved diffraction techniques
- 1.4. The present work
- 1.5. List of publications in association with this work
- Chapter 2 Ferroelectric materials
- 2.1. General remarks on ferroelectrics
- 2.2. Polarization switching and hysteresis loop in ferroelectrics
- 2.3. Domain patterns in ferroelectrics
- 2.4. Electromechanical coupling in ferroelectrics
- 2.5. Crystallography of ferroelectric perovskites
- Chapter 3 X-ray diffraction
- 3.1. Basic physical principle of X-ray diffraction
- 3.2. Ewald sphere
- 3.3. Single crystal X-ray diffraction
- 3.4. Powder diffraction for polycrystalline samples
- Chapter 4 Stroboscopic data-acquisition for time-resolved X-ray diffraction
- 4.1. Operating principle of stroboscopic data-acquisition system
- 4.2. New strategies for stroboscopic time-resolved X-ray diffraction
- 4.3. Conclusion
- Chapter 5 Stroboscopic time-resolved high-resolution reciprocal space mapping study of Na0.5Bi0.5TiO3 single crystal under an alternating electric field
- 5.1. Introduction
- 5.2. Experiment: stroboscopic time-resolved reciprocal space mapping under an alternating electric field
- 5.3. Results
- 5.4. Interpretation and discussion
- 5.5. Conclusion
- Chapter 6 Time-resolved X-ray diffraction study of a uniaxial Sr0.5Ba0.5Nb2O6 ferroelectric single crystal under an alternating electric field
- 6.1. Introduction
- 6.2. Experiment: Time-resolved rocking curves under an alternating electric field
- 6.3. A New mechanism of an enhanced piezoelectricity in uniaxial ferroelectrics under an applied over-coercive field
- 6.4. Nonlinear response of uniaxial ferroelectrics under sub-coercive fields
- 6.5. Conclusion
- Chapter 7 Time-resolved X-ray powder diffraction study of BaTiO3-based ferroelectric ceramics: Polarization reversal and strain response under an alternating electric field
- 7.1. Introduction
- 7.2. Experiments
- 7.3. Experimental results
- 7.4. Interpretation and discussion
- 7.5. Conclusion
- Chapter 8 Summary
- Appendix A. Installation/Operation of the data-acquisition systems
- A.1. Installation/Operation for the first data-acquisition system (FPGA-board, version 2010)
- A.2. Installation/Operation for the second data-acquisition system (FPGA-board, version 2016)
- A.3. Installation/Operation for the microcontroller-based third data-acquisition system
- Appendix B. Drawings of the designed sample holders
- Appendix C. Fitting procedure for two-dimensional reciprocal space maps
- Appendix D. Animations of the time-resolved two-dimensional reciprocal space maps and a model of the monoclinic distortion
- Appendix E. Time-resolved rocking curves of Sr0.5Ba0.5NbO6 under an alternating electric field
- References
- Acknowledgements