Pd/Cu site interchange in UCu{sub 5-x}Pd{sub x}

Conference · Wed Jul 11 00:00:00 EDT 2001

OSTI ID:797833

Booth, C H; Bauer, E D; Maple, M B; Chau, R; Kwei, G H

Although Pd/Cu site interchange in the non-Fermi liquid (NFL) material UCu{sub 4}Pd has been observed, the relationship between this disorder and the NFL behavior remains unclear. In order to better compare to the UCu{sub 5-x}Pd{sub x} phase diagram, they report results from Pd K edge x-ray absorption fine structure (XAFS) experiments on this series (x = 0.3-1.5) that determine the fraction of Pd atoms on the nominally Cu (16e) sites, s. They find that for these unannealed samples, s is at least 17% for all the samples measured, even for x < 1.0, although it does climb monotonically beyond its minimum at x = 0.7. These data are compared to changes in the lattice parameter as a function of x.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Director, Office of Science. Office of Basic Energy Studies. Chemical Sciences, Geosciences, and Biosciences Division (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 797833
• Report Number(s): LBNL-48338; R&D Project: 403005; B& R KC0302030; TRN: US0202037
• Resource Relation: Conference: The International Conference on Strongly Correlated Electron Systems, Ann Arbor, MI (US), 08/06/2001--08/10/2001; Other Information: PBD: 11 Jul 2001
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ATOMS
ELECTRONS
FINE STRUCTURE
LATTICE PARAMETERS
PHASE DIAGRAMS