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Point Defects and Swelling Induced in Yttria-stabilized Zirconia by Swift Heavy Ion Irradiations

Published online by Cambridge University Press:  01 February 2011

Jean-Marc Costantini  and
François Beuneu
Jean-Marc Costantini
Affiliation:
[email protected], CEA, DMN/SRMA, GIF SUR YVETTE, France
François Beuneu
Affiliation:
[email protected], CNRS, LSI, Palaiseau, France
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Abstract

We present a study of point-defect creation in yttria-stabilized zirconia (ZrO2: Y) or YSZ exposed to various heavy ions (from C to U) covering an energy range from 100 MeV to several GeVs. It is concluded that F+-type centers (involving singly-ionized oxygen vacancies) are produced by elastic-collision processes. The ion-induced out-of-plane expansion is found to be small (< 0.2%) and to increase linearly as a function of the average F+-type center concentration with a large slope compatible with small oxygen vacancy clusters. The large defect volume and <100> axial symmetry of the F+-type centers hint that these color centers might actually be divacancies (i.e. F2+ centers).

Keywords

ion-solid interactionsradiation effectsdefects
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1264: Symposia Z/BB – Basic Actinide Science and Materials for Nuclear Applications , 2010 , 1264-BB02-02
Copyright
Copyright © Materials Research Society 2010

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