Imperial College London
Alternate

ProfessorJohnKilner

Faculty of Engineering, Department of Materials

Senior Research Investigator
 
 
 
//

Contact

 

+44 (0)20 7594 6745j.kilner Website

 
 
//

Location

 

214Royal School of MinesSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Limbeck:2016:10.1039/c6ja00154h,
author = {Limbeck, A and Rupp, GM and Kubicek, M and Tellez, H and Druce, J and Ishihara, T and Kilner, JA and Fleig, J},
doi = {10.1039/c6ja00154h},
journal = {Journal of Analytical Atomic Spectrometry},
pages = {1638--1646},
title = {Dynamic etching of soluble surface layers with on-line inductively coupled plasma mass spectrometry detection - a novel approach for determination of complex metal oxide surface cation stoichiometry},
url = {http://dx.doi.org/10.1039/c6ja00154h},
volume = {31},
year = {2016}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - In this work, an innovative approach for determining the surface stoichiometry of complex metal oxide (CMO) thin films is presented. The procedure is based on treatment of the sample surface with different etching solutions, followed by on-line analysis of the derived eluates using inductively coupled plasma – mass spectrometry (ICP-MS). Via consecutive treatment of the sample surface with water and diluted HCl, a differentiation between water soluble and acid soluble parts of near surface regions in thin films is enabled. The developed procedure was applied for the analysis of dense La0.6Sr0.4CoO3−δ (LSC) thin films indicating the presence of a water soluble Sr-rich phase with sub nm-thickness on top of the LSC films. The step-wise optimization of this technique is reported and the results are compared to measurements performed by low-energy ion scattering (LEIS). The detrimental effect of the water soluble Sr rich phase on the oxygen exchange activity of LSC thin film electrodes is verified by electrochemical impedance spectroscopy (EIS).
AU  - Limbeck,A
AU  - Rupp,GM
AU  - Kubicek,M
AU  - Tellez,H
AU  - Druce,J
AU  - Ishihara,T
AU  - Kilner,JA
AU  - Fleig,J
DO  - 10.1039/c6ja00154h
EP  - 1646
PY  - 2016///
SN  - 1364-5544
SP  - 1638
TI  - Dynamic etching of soluble surface layers with on-line inductively coupled plasma mass spectrometry detection - a novel approach for determination of complex metal oxide surface cation stoichiometry
T2  - Journal of Analytical Atomic Spectrometry
UR  - http://dx.doi.org/10.1039/c6ja00154h
UR  - http://hdl.handle.net/10044/1/42319
VL  - 31
ER  -
Download