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The defect structure of yttria-stabilized zirconia, studied by quasielastic diffuse neutron scattering

Andersen, N. H., Clausen, K., Hackett, M. A., Hayes, W., Hutchings, M. T., MacDonald, John Emyr and Osborn, R. 1986. The defect structure of yttria-stabilized zirconia, studied by quasielastic diffuse neutron scattering. Physica B+C 136 (1-3) , pp. 315-317. 10.1016/S0378-4363(86)80081-X

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Abstract

The static defect structure of the oxygen ion conductor Y203 stabilized zirconia has been studied at room temperature by coherent diffuse neutron scattering from single crystal samples containing nominally 9.4, 12, 15 and 18 mol% Y203. There are two principal contributions to the observed diffuse intensity. The first arises from tetrahedral distortions in small vacancy free regions of the crystal which decrease in volume as the dopant level increases. The second arises from correlated vacancies and their associated relaxed ions in the remainder of the crystal. The 9.4 mol% sample has been studied at elevated temperatures. The scattering becomes partly quasielastic, but the correlations persist to the highest temperatures studied (1900°C). The temperature and Q-dependence of the energy width has been studied at selected positions in reciprocal space.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: Elsevier
ISSN: 0378-4363
Last Modified: 04 Jun 2017 04:54
URI: http://orca.cf.ac.uk/id/eprint/46296

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