Microstructural characterization of terbium-doped ceria

Journal Article · Thu May 03 00:00:00 EDT 2007 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2006.08.007· OSTI ID:21000640

Ye, F ^[1]; Mori, Toshiyuki ^[1]; Ou, D R ^[1]; Jin, Zou ^[2]; Drennan, John ^[3]

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1. Fuel Cell Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
2. School of Engineering, University of Queensland, St. Lucia, Brisbane, Queensland 4072 (Australia)
3. Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia, Brisbane, Queensland 4072 (Australia)

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.

• OSTI ID: 21000640
• Journal Information: Materials Research Bulletin, Vol. 42, 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); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

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