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Effects of volume compressions on the electronic structure are studied theoretically for a number of different actinide systems. For the elemental metals the dhcp to fcc crystallographic transformation for Am, Cm, Bk and Cf was calculated and compared with experimental results. The magnetism of actinide compounds was also studied. The spin and orbital 5f moments in UFe(2) are found to be almost equal in magnitude but of opposite directions. Calculation of the 5f spin polarisation in UPd(3) suggests that the 5f localisation remains stable even at high pressures. The orbital and spin composition of the magnetic moment in NpOs(2) is studied as a function of volume.

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Authors: JOHANSSON B, University of Uppsala, Physics Department, Uppsala (SE);ERIKSSON O, University of Uppsala, Physics Department, Uppsala (SE)
Bibliographic Reference: Article: High Pressure Research, Vol. 2 (1990) pp. 303-313
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