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dc.contributor.author
Vega Castillo, Jesus Eduardo  
dc.contributor.author
Buvat, Gaëtan  
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Corbel, Gwenaël  
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Kassiba, Abdelhadi  
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Lacorre, Philippe  
dc.contributor.author
Caneiro, Alberto  
dc.date.available
2018-10-30T18:35:19Z  
dc.date.issued
2017-05  
dc.identifier.citation
Vega Castillo, Jesus Eduardo; Buvat, Gaëtan; Corbel, Gwenaël; Kassiba, Abdelhadi; Lacorre, Philippe; et al.; On the local order of amorphous La2Mo2O6.7; Royal Society of Chemistry; Dalton Transactions; 46; 22; 5-2017; 7273-7283  
dc.identifier.issn
1477-9226  
dc.identifier.uri
http://hdl.handle.net/11336/63325  
dc.description.abstract
The amorphous reduction product of the oxide ion conductor La2Mo2O9 was previously shown to be a good, sulphur-tolerant, anode material for solid oxide fuel cell devices (X. C. Lu, J. H. Zhu, J. Electrochem. Soc., 2008, 155(10), B1053). In this paper, we study the local order of amorphous La2Mo2O6.7 using X-ray absorption spectroscopy analyses and electronic paramagnetic resonance. The extended X-ray absorption fine structure analysis of local arrangements around Mo in La2Mo2O6.7 is first carried out on the basis of strong distortions from three crystalline models of La2Mo2O9, La7Mo7O30 and La2Mo2O7. The extended X-ray absorption fits obtained from both La2Mo2O9 and La7Mo7O30 yield similar atomic arrangements in the amorphous phase, upon large atomic displacements. However it is also possible to fit the spectrum using the paths of La2Mo2O7, in better agreement with EPR results suggesting the presence of Mo-Mo pairs. Simpler arrangements, built from theoretical single scattering paths, are considered. All models are discussed and compared. A most probable short range structure around Mo in this amorphous phase is proposed. It both fulfills EPR results and appears coherent with the presence of ionic conductivity.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Royal Society of Chemistry  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Lamox  
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Exafs  
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Sofc  
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Anode  
dc.subject.classification
Recubrimientos y Películas  
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Ingeniería de los Materiales  
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INGENIERÍAS Y TECNOLOGÍAS  
dc.title
On the local order of amorphous La2Mo2O6.7  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-10-22T17:59:13Z  
dc.journal.volume
46  
dc.journal.number
22  
dc.journal.pagination
7273-7283  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Cambridge  
dc.description.fil
Fil: Vega Castillo, Jesus Eduardo. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Universite Bretagne-Loire; Francia  
dc.description.fil
Fil: Buvat, Gaëtan. Universite Bretagne-Loire; Francia  
dc.description.fil
Fil: Corbel, Gwenaël. Universite Bretagne-Loire; Francia  
dc.description.fil
Fil: Kassiba, Abdelhadi. Universite Bretagne-Loire; Francia  
dc.description.fil
Fil: Lacorre, Philippe. Universite Bretagne-Loire; Francia  
dc.description.fil
Fil: Caneiro, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina  
dc.journal.title
Dalton Transactions  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2017/dt/c7dt00637c  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1039/C7DT00637C