Structure Specificity of Nanocrystalline Praseodymia Doped Ceria Full article
Conference |
2004 MRS Fall Meeting 29 Nov - 2 Dec 2004 , Boston |
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Source | Solid state ionics - 2004 : symposium held November 29 - December 2, 2004, Boston, Massachusetts, U.S.A. Compilation, Materials Research Society. Warrendale.2005. 378 c. ISBN 1558997830. |
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Journal |
MRS Online Proceedings Library
ISSN: 1946-4274 |
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Output data | Year: 2004, Volume: 835, Article number : K5.2 PM K5.2/FF5.2, Pages count : 6 | ||||||||
Tags | X-RAY-ABSORPTION; MIXED CONDUCTORS; SOLID-SOLUTIONS; OXIDE; SPECTROSCOPY; Pr; Zr | ||||||||
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Abstract:
The features of the structure of nanorystalline Ce1-xPr xO2-y system (0 ≤ x ≤ 0.5) prepared via a complex polymerized precursor (Pechini) route have been elucidated by using a combination of spectroscopic (XANES, XPS) and structural (TEM, neutron diffraction) methods. Within the studied range of composition, the structure of all samples air annealed at 500°C corresponds to single-phase fluorite-like solid solution. The relative content of Pr3+ both in the bulk and in the surface layer appears to be as high as 20-50%. The Rietveld refinement revealed non-monotonous variation of structural parameters (lattice parameter, domain size, microstrain density, Ce-O and O-O distances) and residual lattice hydroxyls concentration with Pr content. Clustering of defects along with variation of the mean Pr cation radius/charge state and disordering of the surface layer/ domain boundaries appear to be responsible for the observed features. © 2005 Materials Research Society.
Cite:
Sadykov V.A.
, Voronin V.I.
, Petrov A.N.
, Frolova Y.V.
, Kriventsov V.V.
, Kochubei D.I.
, Zaikovskii V.I.
, Borchert H.
, Neophytides S.
Structure Specificity of Nanocrystalline Praseodymia Doped Ceria
In compilation Solid state ionics - 2004 : symposium held November 29 - December 2, 2004, Boston, Massachusetts, U.S.A.. – Materials Research Society., 2004. – C.276–281. – ISBN 1558997830. WOS Scopus РИНЦ
Structure Specificity of Nanocrystalline Praseodymia Doped Ceria
In compilation Solid state ionics - 2004 : symposium held November 29 - December 2, 2004, Boston, Massachusetts, U.S.A.. – Materials Research Society., 2004. – C.276–281. – ISBN 1558997830. WOS Scopus РИНЦ
Dates:
Published print: | Dec 1, 2004 |
Identifiers:
Web of science | WOS:000229184100032 |
Scopus | 2-s2.0-20344377965 |
Elibrary | 15043335 |
Chemical Abstracts | 2005:370182 |
Chemical Abstracts (print) | 143:45611 |