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High-energy-spectroscopy study of the Pd-Ce system

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
We report x-ray-absorption and photoemission measurements on crystalline and amorphous Pd/sub 1-//sub x/Ce/sub x/ alloys. In this system, cerium ions present a valence change induced by concentration and a correlation between the cerium electronic configuration and the density of occupied states. The centroid of the Pd 4d--related band moves away from the Fermi level with increasing cerium content, leading to a decrease in the mixing between 4f and conduction electrons and then to the stabilization of the cerium trivalent state. The effect of structural disorder on the cerium valence anomaly in amorphous alloys is also discussed.
Research Organization:
Laboratoire de Physique du Solide, Universite de Nancy I, Boite Postale No. 239, 54506 Vandoeuvre-les-Nancy Cedex, France Batiment 209D, 91405 Orsay Cedex, France
OSTI ID:
6881484
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:6; ISSN PRBMD
Country of Publication:
United States
Language:
English