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An overview of pressure-induced structural phase transitions and compressibility of actinide compounds is given. Systematic trends in the nature of the high-pressure phases, the transition pressures, the hysteresis to retransformation on pressure release, and the compressibility are observed in the family of AnX compounds of B1 (NaCl) structure type. The dioxides studied form high-pressure phases of PbCl(2) type. UX(2) compounds of Fe(2)As type also tend to have PbCl(2) type high-pressure phases. The Th(3)P(4) type compounds studied do not transform up to 50 GPa. The same is true for ThOS and UOSe up to about 45 GPa. Comparisons with rare earth compounds are made where possible.

Additional information

Authors: BENEDICT U ET AL., JRC Karlsruhe (DE);STAUN OLSEN J, University of Copenhagen, Physics Laboratory (DK);GERWARD L, Technical University of Denmark, Laboratory of Applied Physics, Lyngby (DK);HAIRE R G, Oak Ridge National Laboratory (US)
Bibliographic Reference: Paper presented: 19th Rare Earth Research Conference, Lexington (US), July 14-17, 1991
Availability: Available from (1) as Paper EN 36073 ORA
Record Number: 199210716 / Last updated on: 1994-12-02
Original language: en
Available languages: en