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Free Volumes Associated with Sintering in Gadolinium Doped Ceria Solid Solutions
Joint Authors
Source
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-09-27
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Engineering Sciences and Information Technology
Chemistry
Civil Engineering
Abstract EN
Gadolinium-doped ceria (GDC) solid solution prepared by the oxalate coprecipitation method is investigated by X-ray diffraction (XRD), complex impedance analysis, and positron lifetime spectroscopy.
XRD reveals an expansion of GDC lattice constant by doping gadolinium into a ceria host crystal, in agreement with an oxygen vacancy model.
The ionic conductivity of GDC measured at 773 K in air is two orders of magnitude higher than that of undoped ceria.
Positron lifetime spectroscopy reveals the presence of vacancy-sized free volumes and nanovoids in interfaces among crystallites.
It is found that the vacancy-sized free volumes shrink with increasing sintering temperatures.
In the present paper, recent advances in the studies of GDC by XRD, complex impedance measurement, and positron lifetime spectroscopy are reviewed to gain an insight into the sintering mechanism.
American Psychological Association (APA)
Kosaka, Tomomi& Sato, Kiminori. 2010. Free Volumes Associated with Sintering in Gadolinium Doped Ceria Solid Solutions. Journal of Nanomaterials،Vol. 2010, no. 2010, pp.1-5.
https://search.emarefa.net/detail/BIM-509454
Modern Language Association (MLA)
Kosaka, Tomomi& Sato, Kiminori. Free Volumes Associated with Sintering in Gadolinium Doped Ceria Solid Solutions. Journal of Nanomaterials No. 2010 (2010), pp.1-5.
https://search.emarefa.net/detail/BIM-509454
American Medical Association (AMA)
Kosaka, Tomomi& Sato, Kiminori. Free Volumes Associated with Sintering in Gadolinium Doped Ceria Solid Solutions. Journal of Nanomaterials. 2010. Vol. 2010, no. 2010, pp.1-5.
https://search.emarefa.net/detail/BIM-509454
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-509454