X-ray-absorption near-edge-structure study ofEuPd3Bx: A mixed-valence system

Abstract

L3 absorption spectra of Eu in boron-containing alloys, EuPd3B"(x =0, 0.25, 0.5, and 1.0) have been recorded. Direct evidence for the mixed-valence (Eu + and Eu +) behavior of Eu in EuPd3Bp5 and EuPd3B has been provided by x-ray-absorption near-edge structure (XANES). The value of the average valence of Eu in EuPd3B and EuPd3Bp5 alloys is estimated and it is found to be temperature independent.The XANES results in conjunction with the Mossbauer measurements lead to the conclusion that EuPd3B is an inhomogeneous mixed-valence system.

ThPt3+xBe (x= 0.08): Crystal Structure and Physical Properties

“…A typical example of such a system is EuPd 3 B x , in which the inclusion of additional boron induces valence instability of Eu and thus transition from non‐magnetic (Eu 3+ ) to magnetic (Eu 2+ ) state, An antiperovskite‐like EuPd 3 B x structure appears after filling the octahedral void in binary compound EuPd 3 (crystallizing with AuCu 3 type) with a B atom. Such observations are rather common and have been discussed in the literature , …”