Absence of Ni on the outer surface of Sr doped La 2 NiO 4 single crystals

Mónica Burriel, Stuart Wilkins, John P. Hill, Miguel A. Muñoz-Márquez, Hidde H. Brongersma, John A. Kilner, Mary P. Ryan, Stephen J. Skinner

Research output: Contribution to journalArticlepeer-review

81 Scopus citations


A combination of surface sensitive techniques was used to determine the surface structure and chemistry of La2-xSrxNiO 4+δ. These measurements unequivocally showed that Ni is not present in the outermost atomic layer, suggesting that the accepted model with the B-site cations exposed to the environment is incorrect. © 2014 The Royal Society of Chemistry.
Original languageEnglish (US)
Pages (from-to)311-316
Number of pages6
JournalEnergy Environ. Sci.
Issue number1
StatePublished - 2014
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This research was supported by a Marie Curie Intra European Fellowship within the seventh European Community Framework Programme (PIEF-GA-2009-252711) and by KAUST (King Abdullah University of Science and Technology) Academic Excellence Alliance (for M.B). Use of the National Synchrotron Light Source, and work carried out at Brookhaven National Laboratory, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract no. DE-AC02-98CH10886. The authors also thank D. Prabhakaran (University of Oxford) for providing single crystals and M. Fartmann (TASCON GmbH), T. Grehl, P. Bruner (ION-TOF GmbH), S. Fearn and H. Tellez (Imperial College) for LEIS measurements and support with LEIS data analysis.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.


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