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Self-consistent relativistic calculations of the electronic properties for seven actinides (Ac-Am) have been performed using the linear muffin-tin orbitals method within the atomic-sphere approximation. Exchange and correlation were included in the local spindensity scheme. The theory explains the variation of the atomic volume and the bulk modulus through the $5f$ series in terms of an increasing $5f$ binding up to plutonium followed by a sudden localization (through complete spin polarization) in americium.
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Skriver et al. (1978) studied this question.
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