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http://hdl.handle.net/10261/99207
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Campo DC | Valor | Lengua/Idioma |
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dc.contributor.author | Moreno, Roberto | - |
dc.contributor.author | Garcia-Ramírez, Pablo | - |
dc.contributor.author | Zapata, James | - |
dc.contributor.author | Roqueta, Jaume | - |
dc.contributor.author | Chaigneau, Julienne | - |
dc.contributor.author | Santiso, José | - |
dc.date.accessioned | 2014-07-01T09:08:18Z | - |
dc.date.available | 2014-07-01T09:08:18Z | - |
dc.date.issued | 2013 | - |
dc.identifier | doi: 10.1021/cm401714d | - |
dc.identifier | issn: 0897-4756 | - |
dc.identifier | e-issn: 1520-5002 | - |
dc.identifier.citation | Chemistry of Materials 25(18): 3640-3647 (2013) | - |
dc.identifier.uri | http://hdl.handle.net/10261/99207 | - |
dc.description.abstract | We have developed a new method to study the oxygen surface exchange kinetics in oxide materials in the form of epitaxial thin films by analyzing subtle cell parameter variations induced by changes in the oxygen stoichiometry of the material. The method consists of continuously analyzing the X-ray diffraction pattern of particular film reflections with a linear X-ray fast detector in a static position, while exposing the sample to sudden changes in the pO2 of the atmosphere at elevated temperatures. With this method, we have been able to follow cell parameter changes as small as 2.10 -4 Å in time intervals as short as 10 s in La 2NiO4+δ epitaxial films and La2NiO 4+δ/LaNiO3-δ bilayers. This method provides a simpler and contactless tool for dynamically analyzing oxygen surface exchange kinetics and diffusion in transition metal oxide compounds, and complements other currently used techniques such as Electric Conductivity Relaxation (ECR) and Isotopic Exchange depth profiling (IEDP). In addition, this method is a unique tool to address oxygen transport across solid-solid interfaces in thin film heterostructures. © 2013 American Chemical Society. | - |
dc.description.sponsorship | The authors would like to acknowledge the Spanish Ministry of Education and Culture for financial support (MAT2011-29081-C02-01 and CONSOLIDER-INGENIO CSD2008-0023 projects). R.M. and J.R. thank the Spanish Ministry of Education for an FPI grant and PTA contracts, and J.Z. thanks the Spanish National Research Council (CSIC) for JAE-PreDoc Scholarship. | - |
dc.publisher | American Chemical Society | - |
dc.rights | closedAccess | - |
dc.subject | Solid state ionics | - |
dc.subject | Solid oxide fuel cells | - |
dc.subject | Oxygen surface exchange | - |
dc.title | Chemical strain kinetics induced by oxygen surface exchange in epitaxial films explored by time-resolved x-ray diffraction | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1021/cm401714d | - |
dc.date.updated | 2014-07-01T09:08:18Z | - |
dc.description.version | Peer Reviewed | - |
dc.language.rfc3066 | eng | - |
dc.contributor.funder | Ministerio de Educación y Cultura (España) | - |
dc.contributor.funder | Consejo Superior de Investigaciones Científicas (España) | - |
dc.contributor.funder | European Commission | - |
dc.identifier.funder | http://dx.doi.org/10.13039/501100003339 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100000780 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.grantfulltext | none | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | No Fulltext | - |
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