Diao, J;
Wu, L;
Suzana, AF;
Bozin, ES;
Zatterin, EM;
Leake, SJ;
Harder, RJ;
... Robinson, IK; + view all
(2024)
Behavior of strain stripe networks in barium titanate nanocrystals on crossing its ferroelectric phase transition.
Physical Review Materials
, 8
(1)
, Article 016002. 10.1103/PhysRevMaterials.8.016002.
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Abstract
Nanoscale strain networks are reported in BaTiO3 (BTO) crystals of 300 nm size using Bragg coherent diffractive imaging. BTO nanocrystals with clear facets were chosen to identify the crystallographic directions, allowing the strain field direction and periodicity to be studied in detail. Stripes of strain were observed, which were both stable and preserved in tetragonal and cubic phases at elevated temperatures, above the tetragonal-to-cubic phase transition. A finite element analysis approach was used to simulate the domain structures inside a BTO crystal and to understand the origins of the strain stripes as piezoelectric blocks. A 180° domain model gives a better qualitative match to the experimental images.
| Type: | Article |
|---|---|
| Title: | Behavior of strain stripe networks in barium titanate nanocrystals on crossing its ferroelectric phase transition |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevMaterials.8.016002 |
| Publisher version: | https://doi.org/10.1103/PhysRevMaterials.8.016002 |
| Language: | English |
| Additional information: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10187376 |
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