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Title: Microstructural characterization of terbium-doped ceria

Abstract

The microstructures of Ce{sub 1-x}Tb {sub x}O{sub 2-{delta}} (0.10 {<=} x {<=} 0.50) sintered samples were studied systematically using transmission electron microscopy. The sintered samples consist of not only fluorite-structured matrix but also nano-sized precipitates. Correspondingly, diffuse scattering and extra reflections related to the precipitates were observed in the selected area diffraction patterns. The composition of the precipitates was studied quantitatively by electron energy-loss spectroscopy, indicating that the precipitates have higher Tb concentration than that of the matrix. Furthermore, Tb{sup 3+} and Ce{sup 3+} cations were observed to segregate in the precipitates.

Authors:
 [1];  [2];  [2];  [3];  [4];  [5]
  1. Fuel Cell Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan). E-mail: fei.ye@nims.go.jp
  2. Fuel Cell Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
  3. School of Engineering, University of Queensland, St. Lucia, Brisbane, Queensland 4072 (Australia)
  4. (Australia)
  5. Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia, Brisbane, Queensland 4072 (Australia)
Publication Date:
OSTI Identifier:
21000640
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 42; Journal Issue: 5; Other Information: DOI: 10.1016/j.materresbull.2006.08.007; PII: S0025-5408(06)00327-8; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CERIUM IONS; CERIUM OXIDES; DIFFUSE SCATTERING; DOPED MATERIALS; ENERGY-LOSS SPECTROSCOPY; FLUORITE; MICROSTRUCTURE; NANOSTRUCTURES; OPTICAL REFLECTION; PRECIPITATION; TERBIUM; TERBIUM IONS; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Ye, F., Mori, Toshiyuki, Ou, D.R., Zou Jin, Centre for Microscopy and Microanalysis, University of Queensland, St. Lucia, Brisbane, Queensland 4072, and Drennan, John. Microstructural characterization of terbium-doped ceria. United States: N. p., 2007. Web. doi:10.1016/j.materresbull.2006.08.007.
Ye, F., Mori, Toshiyuki, Ou, D.R., Zou Jin, Centre for Microscopy and Microanalysis, University of Queensland, St. Lucia, Brisbane, Queensland 4072, & Drennan, John. Microstructural characterization of terbium-doped ceria. United States. doi:10.1016/j.materresbull.2006.08.007.
Ye, F., Mori, Toshiyuki, Ou, D.R., Zou Jin, Centre for Microscopy and Microanalysis, University of Queensland, St. Lucia, Brisbane, Queensland 4072, and Drennan, John. Thu . "Microstructural characterization of terbium-doped ceria". United States. doi:10.1016/j.materresbull.2006.08.007.
@article{osti_21000640,
title = {Microstructural characterization of terbium-doped ceria},
author = {Ye, F. and Mori, Toshiyuki and Ou, D.R. and Zou Jin and Centre for Microscopy and Microanalysis, University of Queensland, St. Lucia, Brisbane, Queensland 4072 and Drennan, John},
abstractNote = {The microstructures of Ce{sub 1-x}Tb {sub x}O{sub 2-{delta}} (0.10 {<=} x {<=} 0.50) sintered samples were studied systematically using transmission electron microscopy. The sintered samples consist of not only fluorite-structured matrix but also nano-sized precipitates. Correspondingly, diffuse scattering and extra reflections related to the precipitates were observed in the selected area diffraction patterns. The composition of the precipitates was studied quantitatively by electron energy-loss spectroscopy, indicating that the precipitates have higher Tb concentration than that of the matrix. Furthermore, Tb{sup 3+} and Ce{sup 3+} cations were observed to segregate in the precipitates.},
doi = {10.1016/j.materresbull.2006.08.007},
journal = {Materials Research Bulletin},
number = 5,
volume = 42,
place = {United States},
year = {Thu May 03 00:00:00 EDT 2007},
month = {Thu May 03 00:00:00 EDT 2007}
}