Imperial College London
Alternate

Dr Ainara Aguadero

Faculty of Engineering, Department of Materials

Visiting Reader
 
 
 
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Contact

 

+44 (0)20 7594 5174a.aguadero CV

 
 
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Location

 

1.07Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{van:2020:10.1002/admi.201901440,
author = {van, den Bosch C and Cavallaro, A and Moreno, R and Cibin, G and Kerherve, G and Caciedo, J and Lippert, T and Doebeli, M and Santiso, J and Skinner, S and Aguadero, A},
doi = {10.1002/admi.201901440},
journal = {Advanced Materials Interfaces},
title = {Revealing strain effects on the chemical compositionof Perovskite oxide thin films surface, bulk, and interfaces},
url = {http://dx.doi.org/10.1002/admi.201901440},
volume = {7},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Understanding the effects of lattice strain on oxygen surface and diffusion kinetics in oxides is a controversial subject that is critical for developing efficient energy storage and conversion materials. In this work, high-quality epitaxial thin films of the model perovskite La0.5Sr0.5Mn0.5Co0.5O3-δ (LSMC), under compressive or tensile strain, were characterized with a combination of in situ and ex situ bulk and surface-sensitive techniques. The results demonstrate a non-linear correlation of mechanical and chemical properties as a function of the operation conditions. It was observed that the effect of strain on reducibility is dependent on the “effective strain” induced on the chemical bonds. In plain strain, and in particular the relative B-O length bond, are the key factor controlling which of the B-site cation would be reduced preferentially. Furthermore, the need to use a set of complimentary techniques to isolate different chemically-induced strain effects was proven.   With this, it was confirmed that tensile strain favors the stabilization of a more reduced lattice, accompanied by greater segregation of strontium secondary phases and a decrease of oxygen exchange kinetics on  LSMC thin films.
AU  - van,den Bosch C
AU  - Cavallaro,A
AU  - Moreno,R
AU  - Cibin,G
AU  - Kerherve,G
AU  - Caciedo,J
AU  - Lippert,T
AU  - Doebeli,M
AU  - Santiso,J
AU  - Skinner,S
AU  - Aguadero,A
DO  - 10.1002/admi.201901440
PY  - 2020///
SN  - 2196-7350
TI  - Revealing strain effects on the chemical compositionof Perovskite oxide thin films surface, bulk, and interfaces
T2  - Advanced Materials Interfaces
UR  - http://dx.doi.org/10.1002/admi.201901440
UR  - http://hdl.handle.net/10044/1/75592
VL  - 7
ER  -
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