XPS studies of the hybridization effects in RNi4B (R = Ce, Pr, Nd) compounds

被引：21
|
作者：
Tolinski, T
Kowalczyk, A
Chelkowska, G
机构：
[1] Polish Acad Sci, Inst Mol Phys, PL-60179 Poznan, Poland
[2] Silesian Univ, Inst Phys, PL-40007 Katowice, Poland
来源：
PHYSICS LETTERS A | 2003年 / 308卷 / 01期
关键词：
XPS; hybridization effects; intermetallics;
D O I：
10.1016/S0375-9601(02)01797-8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report new results on X-ray photoemission spectroscopy (XPS) studies of CeNi4B. For comparison the PrNi4B and NdNi4B intermetallic compounds are investigated. Core-levels and valence bands were investigated. The valence band spectra of RNi4B are established mainly by R(4f) and Ni(3d) states. The XPS spectra of the 3d(5/2) and 3d(3/2) states reveal additional satellites, which, basing on the Gunnarsson-Schonhammer model, enable the estimation of the coupling between the f-orbitals and the conduction states, Delta approximate to 85 meV, 63 meV and 23 meV for CeNi4B, PrNi4B and NdNi4B, respectively. The value of the 3d spin-orbit splitting E-LS for R = Ce, Pr and Nd is equal to 18.4, 20.8 and 22.8 eV, respectively. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：75 / 79
页数：5
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