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Journal article
The Effect of Chemical Environment and Temperature on the Domain Structure of Free-Standing BaTiO3 via In Situ STEM
Advanced science, v 10(29), 2303028
01 Oct 2023
PMID: 37607120
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Ferroelectrics, due to their polar nature and reversible switching, can be used to dynamically control surface chemistry for catalysis, chemical switching, and other applications such as water splitting. However, this is a complex phenomenon where ferroelectric domain orientation and switching are intimately linked to surface charges. In this work, the temperature-induced domain behavior of ferroelectric-ferroelastic domains in free-standing BaTiO3 films under different gas environments, including vacuum and oxygen-rich, is studied by in situ scanning transmission electron microscopy (STEM). An automated pathway to statistically disentangle and detect domain structure transformations using deep autoencoders, providing a pathway towards real-time analysis is also established. These results show a clear difference in the temperature at which phase transition occurs and the domain behavior between various environments, with a peculiar domain reconfiguration at low temperatures, from a-c to a-a at & AP;60 & DEG;C. The vacuum environment exhibits a rich domain structure, while under the oxidizing environment, the domain structure is largely suppressed. The direct visualization provided by in situ gas and heating STEM allows to investigate the influence of external variables such as gas, pressure, and temperature, on oxide surfaces in a dynamic manner, providing invaluable insights into the intricate surface-screening mechanisms in ferroelectrics.
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Details
- Title
- The Effect of Chemical Environment and Temperature on the Domain Structure of Free-Standing BaTiO3 via In Situ STEM
- Creators
- Tamsin O'Reilly - Queens UniversityKristina M. Holsgrove - Queen's University BelfastXinqiao Zhang - Drexel Univ, Dept Mech Engn & Mech, Philadelphia, PA 19104 USAJohn J. R. Scott - Queen's University BelfastIaro Gaponenko - University of GenevaPraveen Kumar - Queen's University BelfastJoshua Agar - Drexel University, Mechanical Engineering and MechanicsPatrycja Paruch - University of GenevaMiryam Arredondo - Queen's University Belfast
- Publication Details
- Advanced science, v 10(29), 2303028
- Publisher
- Wiley
- Number of pages
- 10
- Grant note
- EP/L015323/1 / Engineering and Physical Sciences Research Council; UK Research & Innovation (UKRI); Engineering & Physical Sciences Research Council (EPSRC)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:001050857700001
- Scopus ID
- 2-s2.0-85168330519
- Other Identifier
- 991021861184904721
UN Sustainable Development Goals (SDGs)
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology