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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.

Additional information

Authors: DANCAUSSE J-P, JRC Karlsruhe (DE);BENEDICT U, JRC Karlsruhe (DE)
Bibliographic Reference: Paper presented: 22. Journées des Actinides, Méribel (FR), April 22-25, 1992
Availability: Text not available
Record Number: 199211160 / Last updated on: 1994-11-29
Original language: en
Available languages: en
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