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Electronic Properties of ζ-U-Pu Alloys

Published online by Cambridge University Press:  01 February 2011

Ladislav Havela
Affiliation:
havela@mag.mff.cuni.cz, Charles University, Department of Condensed Matter Physics, Prague 2, Czech Republic
Anna Adamska
Affiliation:
anna@mag.mff.cuni.cz, Charles University, Department of Condensed Matter Physics, Prague 2, Czech Republic
Rachel Eloirdi
Affiliation:
rachel.eloirdi@ec.europa.eu, European Commission, Joint Research Centre, Institute for Transuranium Elements, Karlsruhe, Germany
Eric Colineau
Affiliation:
eric.colineau@ec.europa.eu, European Commission, Joint Research Centre, Institute for Transuranium Elements, Karlsruhe, Germany
Jean-Christophe Griveau
Affiliation:
jean-christophe.griveau@ec.europa.eu, European Commission, Joint Research Centre, Institute for Transuranium Elements, Karlsruhe, Germany
Thomas Gouder
Affiliation:
thomas.gouder@ec.europa.eu, European Commission, Joint Research Centre, Institute for Transuranium Elements, Karlsruhe, Germany
Frank Huber
Affiliation:
frank.huber@ec.europa.eu, European Commission, Joint Research Centre, Institute for Transuranium Elements, Karlsruhe, Germany
Daniel Bouexière
Affiliation:
daniel.bouexiere@ec.europa.eu, European Commission, Joint Research Centre, Institute for Transuranium Elements, Karlsruhe, Germany
Alexander Shick
Affiliation:
shick@fzu.cz, Institute of Physics, ASCR, Na Slovance 2, Praha, 18221, Czech Republic
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Abstract

The ζ-phase, existing between 35 and 70% U in Pu, belongs to the high density phases seen from the point of view of systematics of allotropic modifications of Pu metal. Despite the volume per actinide atom only slightly higher than for α-Pu, it magnetic susceptibility is much higher than for α-Pu and exceeds even the δ-Pu value. Similarly, the Sommerfeld coefficient γ > 40 mJ/mol Pu K2 exceeds the experimental δ-Pu value. The data confirm that the volume is not the primary control parameter affecting the situation around the Fermi level of common Pu phases and they point against the traditional belief that they are essentially narrow 5f band systems.

Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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