Local structure of rare earth niobates (RE3NbO7, RE = Y, Er, Yb, Lu) for proton conduction applications

L. Lõpez-Conesa; J. M. Rebled; M. H. Chambrier; K. Boulahya; J. M. González-Calbet; M. D. Braida; G. Dezanneau; S. Estradé; F. Peirõ

doi:10.1002/fuce.201200136

Local structure of rare earth niobates (RE₃NbO₇, RE = Y, Er, Yb, Lu) for proton conduction applications

L. Lõpez-Conesa
, J. M. Rebled
, M. H. Chambrier
, K. Boulahya
, J. M. González-Calbet
, M. D. Braida
, G. Dezanneau
, S. Estradé
, F. Peirõ

University of Barcelona
CSIC - Instituto de Ciencia de Materiales de Barcelona (ICMAB)
Complutense University
SPMS, UMR 8580 CNRS-Ecole Centrale Paris, Grande Voie des Vignes

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

Structural properties of rare earth niobates (RE₃NbO ₇, RE = Y, Er, Yb, Lu) have been studied using selected area electron diffraction (SAED) and high resolution transmission electron microscopy (HRTEM). SAED patterns show diffuse scattering features along the [111] direction of the pure fluorite (Fm-3m) structure due to a short-range ordering of anion vacancies in the fluorite structure or the change of coordination number around some cations. The latter is related to the presence of small domains of pyrochlore phase (Fd-3m), which are observed in the HRTEM images.

langue originale	Anglais
Pages (de - à)	29-33
Nombre de pages	5
journal	Fuel Cells
Volume	13
Numéro de publication	1
Les DOIs	https://doi.org/10.1002/fuce.201200136
état	Publié - 1 févr. 2013
Modification externe	Oui

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Accès au document

10.1002/fuce.201200136

Contient cette citation

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title = "Local structure of rare earth niobates (RE3NbO7, RE = Y, Er, Yb, Lu) for proton conduction applications",

abstract = "Structural properties of rare earth niobates (RE3NbO 7, RE = Y, Er, Yb, Lu) have been studied using selected area electron diffraction (SAED) and high resolution transmission electron microscopy (HRTEM). SAED patterns show diffuse scattering features along the [111] direction of the pure fluorite (Fm-3m) structure due to a short-range ordering of anion vacancies in the fluorite structure or the change of coordination number around some cations. The latter is related to the presence of small domains of pyrochlore phase (Fd-3m), which are observed in the HRTEM images.",

keywords = "Electrochemical Power Sources, Fuel Cell Electrode, Low Temperature SOFCs, SOFC, Solid Oxide Fuel Cell",

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doi = "10.1002/fuce.201200136",

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T1 - Local structure of rare earth niobates (RE3NbO7, RE = Y, Er, Yb, Lu) for proton conduction applications

AU - Lõpez-Conesa, L.

AU - Rebled, J. M.

AU - Chambrier, M. H.

AU - Boulahya, K.

AU - González-Calbet, J. M.

AU - Braida, M. D.

AU - Dezanneau, G.

AU - Estradé, S.

AU - Peirõ, F.

PY - 2013/2/1

Y1 - 2013/2/1

N2 - Structural properties of rare earth niobates (RE3NbO 7, RE = Y, Er, Yb, Lu) have been studied using selected area electron diffraction (SAED) and high resolution transmission electron microscopy (HRTEM). SAED patterns show diffuse scattering features along the [111] direction of the pure fluorite (Fm-3m) structure due to a short-range ordering of anion vacancies in the fluorite structure or the change of coordination number around some cations. The latter is related to the presence of small domains of pyrochlore phase (Fd-3m), which are observed in the HRTEM images.

AB - Structural properties of rare earth niobates (RE3NbO 7, RE = Y, Er, Yb, Lu) have been studied using selected area electron diffraction (SAED) and high resolution transmission electron microscopy (HRTEM). SAED patterns show diffuse scattering features along the [111] direction of the pure fluorite (Fm-3m) structure due to a short-range ordering of anion vacancies in the fluorite structure or the change of coordination number around some cations. The latter is related to the presence of small domains of pyrochlore phase (Fd-3m), which are observed in the HRTEM images.

KW - Electrochemical Power Sources

KW - Fuel Cell Electrode

KW - Low Temperature SOFCs

KW - SOFC

KW - Solid Oxide Fuel Cell

U2 - 10.1002/fuce.201200136

DO - 10.1002/fuce.201200136

M3 - Article

AN - SCOPUS:84873642986

SN - 1615-6846

VL - 13

SP - 29

EP - 33

JO - Fuel Cells

JF - Fuel Cells

IS - 1