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

页码：75 / 79

页数：5

共 17 条

[1] Mixed valence state of Ce ions in CeNi2Al3
Coldea, M
Neumann, M
Pop, V
Demeter, M
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2001, 323 : 431 - 434
[2] ELECTRONIC-STRUCTURE OF CE AND ITS INTERMETALLIC COMPOUNDS
FUGGLE, JC
HILLEBRECHT, FU
ZOLNIEREK, Z
LASSER, R
FREIBURG, C
GUNNARSSON, O
SCHONHAMMER, K
[J]. PHYSICAL REVIEW B, 1983, 27 (12): : 7330 - 7341
[3] ELECTRON SPECTROSCOPIES FOR CE COMPOUNDS IN THE IMPURITY MODEL
GUNNARSSON, O
SCHONHAMMER, K
[J]. PHYSICAL REVIEW B, 1983, 28 (08): : 4315 - 4341
[4] MAGNETIC-PROPERTIES OF RNI(4)B (R=RARE-EARTH-METAL)
HONG, NM
HOLUBAR, T
HILSCHER, G
VYBORNOV, M
ROGL, P
[J]. IEEE TRANSACTIONS ON MAGNETICS, 1994, 30 (06) : 4966 - 4968
[5] Photoemission study of 4f electronic states in PrFe4P12 and related Pr compounds
Ishii, H
Obu, K
Shinoda, M
Lee, C
Takayama, Y
Miyahara, T
Matsuda, TD
Sugawara, H
Sato, H
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2002, 71 (01) : 156 - 161
[6] Giant hybridization effects in 4f photoemission spectra of Pr and Nd transition-metal compounds -: art. no. 165119
Kucherenko, Y
Finken, M
Molodtsov, SL
Heber, M
Boysen, J
Laubschat, C
Behr, G
[J]. PHYSICAL REVIEW B, 2002, 65 (16): : 1 - 4
[7] STUDY OF THE 4F AND VALENCE BAND DENSITY OF STATES IN RARE-EARTH-METALS .2. EXPERIMENT AND RESULTS
LANG, JK
BAER, Y
COX, PA
[J]. JOURNAL OF PHYSICS F-METAL PHYSICS, 1981, 11 (01): : 121 - 138
[8] SUPERCONDUCTIVITY AND MAGNETISM IN QUATERNARY-F (F-Y OR F-ELEMENTS) TRANSITION-METAL BOROCARBIDES AND MAGNETIC-PROPERTIES OF RNI(4)B (R-Y OR RARE-EARTH)
NAGARAJAN, R
GUPTA, LC
MAZUMDAR, C
HOSSAIN, Z
DHAR, SH
GODART, C
PADALIA, BD
VIJAYARAGHAVAN, R
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 1995, 225 (1-2) : 571 - 577
[9] PRASEODYMIUM 3D-CORE AND 4D-CORE PHOTOEMISSION SPECTRA OF PR2O3
OGASAWARA, H
KOTANI, A
POTZE, R
SAWATZKY, GA
THOLE, BT
[J]. PHYSICAL REVIEW B, 1991, 44 (11): : 5465 - 5469
[10] SCHNEIDER WD, LANDOLTBORNSTEIN NEW, P335

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