Diao, J;
Cherukara, M;
Harder, R;
Huang, X;
Zhang, F;
Chen, B;
Ulvestad, A;
... Robinson, I; + view all
(2020)
Unusual breathing behavior of optically excited barium titanate nanocrystals.
Crystals
, 10
(5)
, Article 365. 10.3390/cryst10050365.
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Abstract
Coherent X-ray diffraction patterns were recorded by using an X-ray free-electron laser to illuminate barium titanate nanocrystals as a function of time delay after laser excitation. Rather than seeing any significant thermal expansion effects, the diffraction peaks were found to move perpendicular to the momentum transfer direction. This suggests a laser driven rotation of the crystal lattice, which is delayed by the aggregated state of the crystals. Internal deformations associated with crystal contacts were also observed.
| Type: | Article |
|---|---|
| Title: | Unusual breathing behavior of optically excited barium titanate nanocrystals |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3390/cryst10050365 |
| Publisher version: | https://doi.org/10.3390/cryst10050365 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | X-ray pump-probe; coherent imaging; ferroelectric oxide |
| 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 > Dept of Physics and Astronomy UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10098219 |
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