Structural properties of fission-product doped ZrO2 and MgAl2O4 single crystals

Citation
L. Thome et al., Structural properties of fission-product doped ZrO2 and MgAl2O4 single crystals, NUCL INST B, 166, 2000, pp. 258-262
Citations number
13
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
ISSN journal
0168583X → ACNP
Volume
166
Year of publication
2000
Pages
258 - 262
Database
ISI
SICI code
0168-583X(200005)166:<258:SPOFDZ>2.0.ZU;2-D
Abstract
The structural properties of Zirconia (ZrO2) and spinel (MgAl2O4) single cr ystals doped by ion implantation with fission products (Cs and I) were inve stigated by using the Rutherford backscattering and channeling techniques. The implantation process induces a heavy damage in the various sublattices of the ceramic matrices above a fluence of about 10(15) at. cm(-2), corresp onding to a number of displacements per atom (dpa) of about 1-2, Large valu es of the Cs and I substitutional fractions, attributed to the formation of impurity-vacancy complexes, are obtained at impurity concentrations lower than 0.5 at.%. The substitutional fraction decreases with increasing implan tation fluence. This effect, which is more pronounced for I than for Cs ion s, is likely due to precipitation or compound formation. (C) 2000 Elsevier Science B.V. All rights reserved.