Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session B47: Catalytic Energy Generation
11:15 AM–2:03 PM,
Monday, March 4, 2019
BCEC
Room: 213
Sponsoring
Unit:
GERA
Chair: Filip Podjaski
Abstract: B47.00014 : Uncovering Biaxial Strain Effect on Nanoparticle Exsolution for Thin-film Perovskites
1:51 PM–2:03 PM
Presenter:
Jiayue Wang
(MIT)
Authors:
Jiayue Wang
(MIT)
Alexander Opitz
(TU Wien)
Roland Bliem
(MIT)
William Bowman
(MIT)
Xiahui Yao
(MIT)
Andreas Nenning
(TU Wien)
Georgios Dimitrakopoulos
(MIT)
Iradwikanari Waluyo
(Brookhaven National Lab)
Adrian Hunt
(Brookhaven National Lab)
Jean-Jacques Gallet
(SOLEIL synchrotron)
Bilge Yildiz
(MIT)
In this work, La0.6Sr0.4FeO3-δ (LSF64) thin films are employed as model systems and the biaxial strain is introduced by growing LSF64 thin films epitaxially on substrates with different lattice constants. Coupling surface chemical information from in-situ ambient pressure X-ray spectroscopy with morphological and structural information from electron microscopy, we found that in-plane biaxial strain can be a powerful tool in optimizing the particle dispersion of the exsolution products. The observed strain dependence of exsolution advances our abilities to control them and enhance the performance of catalysts for clean energy technologies.
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