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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Boada, Roberto
Universitat Autònoma de Barcelona
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2021Photon-in/photon-out spectroscopy at the I20-scanning beamline at diamond light sourcecitations
- 2019Toward the Optimized Spintronic Response of Sn-Doped IrO <inf>2</inf> Thin Filmscitations
- 2016Effect of titania doping and sintering temperature on titanium local environment and electrical conductivity of YSZcitations
- 2014Structural determination of Bi-doped magnetite multifunctional nanoparticles for contrast imagingcitations
- 2014Structural determination of Bi-doped magnetite multifunctional nanoparticles for contrast imagingcitations
- 2014Relationships between structural and electrical properties in mixed conductors duplex materials in the ZrO2-Y2O3-TiO2 ternary systemcitations
- 2013XANES and EXAFS study of the local order in nanocrystalline yttria-stabilized zirconiacitations
- 2012Interfacial magnetic coupling between Fe nanoparticles in Fe-Ag granular alloyscitations
- 2011Enhanced protection of carbon-encapsulated magnetic nickel nanoparticles through a sucrose-based synthetic strategycitations
- 2011XMCD study of the induced magnetic moment in non-magnetic Ga and Ge atoms in intermetallic compounds
- 2010Ionic conductivity of nanocrystalline yttria-stabilized zirconiacitations
- 2010Microstructure and magnetism of nanoparticles with γ-Fe core surrounded by α-Fe and iron oxide shellscitations
- 2009Stress-induced curie temperature increase in the Fe64Ni 36 invar alloycitations
Places of action
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article
XANES and EXAFS study of the local order in nanocrystalline yttria-stabilized zirconia
Abstract
<p>The local order around Zr and Y atoms of nanocrystalline yttria-stabilized zirconia (YSZ) powders with different grain sizes has been investigated by x-ray absorption spectroscopies. The samples were prepared by means of mechanical alloying with or without subsequent sintering treatment and also by milling commercial YSZ. Our study is motivated by the interest in the electrical properties of grain boundaries and the controversy about the level of disorder in the intergrain regions in nanocrystalline YSZ. The x-ray absorption near edge structure (XANES) analysis indicates that the local order of all the sintered samples is independent of the grain size. This is confirmed by the analysis of the extended x-ray absorption fine structure, which points out also that, in contrast to that found in sintered samples, the local order around the cation in the samples milled without further sintering treatment extends only to the first coordination shell. Finally, the results of ab initio Zr K-edge XANES calculations lead us to conclude that the observed changes of the shape of the white line are not related to a phase transformation but reflects the short-range order present in the as-milled samples.</p>