Pressure effects on intermetallic actinide compounds |
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| Authors: | B. Johansson O. Eriksson M. S. S. Brooks |
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| Affiliation: | 1. Condensed Matter Theory Group, Physics Department , University of Uppsala, Box 530 , S-751 21, Uppsala, Sweden;2. Commission of the European Communities, Joint Research Centre, European Institute for Transuranium Elements, Postfach 2340 , D-7500, Karlsruhe, FRG;3. Physics Department , University of Uppsala, Condensed Matter Theory Group, Box 530 , S-75121, Uppsala, Sweden |
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| Abstract: | Abstract Effects of volume compressions on the electronic structure have been studied theoretically for a number of different actinide systems. For the elemental metals the dhcp→fcc crystallographic transformation for Am, Cm, Bk and Cf is calculated and compared with experiment. The magnetism of actinide compounds has also been studied. The spin and orbital 5f moments in UFe2 are found to be almost equal in magnitude but of opposite directions, which now has been confirmed by neutron experiments. Calculation of the 5f spin polarization in UW, suggests that the 5f localization remains stable even at high pressures. The orbital and spin composition of the magnetic moment in NpOs2 is studied as a function of volume. |
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