Changes in non-Fermi liquid behavior with annealing due to lattice disorder in UCu₄Pd
Booth, C. H. · Scheidt, E. -W. · Killer, U. · Weber, A. · Kehrein, S.
Original · EN
The magnetic and electronic properties of non-Fermi liquid UCu₄Pd depend on annealing conditions. Local structural changes due to this annealing are reported from U LᵢII- and Pd K-edge x-ray absorption fine-structure measurements. In particular, annealing decreases the fraction of Pd atoms on nominally Cu 16e sites and the U-Cu pair-distance distribution width. This study provides quantitative information on the amount of disorder in UCu₄Pd and allows an assessment of its possible importance to the observed non-Fermi liquid behavior.
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