Review on X-ray diffraction study under pressure of actinide dioxides
Actinide dioxides were originally studied extensively because of their preponderant place in the nuclear fuel cycle. Furthermore, in the last decade, their behaviour under compression has been studied, principally by X-ray diffraction. In summarising these studies, which are reviewed here, the following observations can be made: (i) a structural transition occurs between 30 and 40 GPa according to the dioxide; (ii) a strong hysteresis exists down to approximately 10 GPa before the reappearance of a fluorite structure; (iii) the bulk modulus variation exhibits unexpected behaviour.
Bibliographic Reference: Paper presented: 22. Journées des Actinides, Méribel (FR), April 22-25, 1992
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Record Number: 199211160 / Last updated on: 1994-11-29
Original language: en
Available languages: en