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Structural features in fluorite compounds relevant for nuclear applications

Published online by Cambridge University Press:  22 February 2012

Gianguido Baldinozzi,
Lionel Desgranges,
David Simeone,
Dominique Gosset and
Laurence Luneville
Gianguido Baldinozzi
Affiliation:
SPMS, MFE, CNRS Ecole Centrale Paris, Châtenay-Malabry & DEN DMN SRMA, CEA, Gif-sur-Yvette, France.
Lionel Desgranges*
Affiliation:
SPMS, MFE, CNRS Ecole Centrale Paris, Châtenay-Malabry & DEN DMN SRMA, CEA, Gif-sur-Yvette, France.
David Simeone
Affiliation:
SPMS, MFE, CNRS Ecole Centrale Paris, Châtenay-Malabry & DEN DMN SRMA, CEA, Gif-sur-Yvette, France.
Dominique Gosset
Affiliation:
SPMS, MFE, CNRS Ecole Centrale Paris, Châtenay-Malabry & DEN DMN SRMA, CEA, Gif-sur-Yvette, France.
Laurence Luneville
Affiliation:
SPMS, MFE, CNRS Ecole Centrale Paris, Châtenay-Malabry & DEN DMN SRMA, CEA, Gif-sur-Yvette, France.
*
† DEN, DEC, CEA, St Paul lez Durance, France.
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Abstract

Oxides with fluorite (or fluorite related) structures form a large class of compounds with a high radiation tolerance, somewhat related to their peculiar ability to accommodate a variety of defects and to form nonstoichiometric compounds with a large homogeneity range. Structural modifications are generally observed when the departure from the ideal composition is large. We discuss these structural features using an approach based on the crystal symmetry analysis based on the phase transition mechanisms in compounds relevant for nuclear applications.

Keywords

actinidephase transformationradiation effects

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1383: Symposium A – Material Challenges in Current and Future Nuclear Technologies , 2012, mrsf11-1383-a02-08
Copyright
Copyright © Materials Research Society 2012

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