Abstract

Measurements of the extended X-ray absorption fine structure (EXAFS) were used to determine the local configuration around uranium and zirconium atoms in (U,Zr)Pd 3 solid solutions. Interatomic distances and lattice constants from EXAFS and X-ray diffraction, respectively, are discussed in relation to the effect of addition of ZrPd 3 to UPd 3. The decrease in U–Pd distance with ZrPd 3 addition was appreciably smaller than the average M–Pd (M=U, Zr) distance of the solutions. The result suggests that the 5-f localized electronic structure of UPd 3 resists compression by the addition of ZrPd 3.

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