Magnetic circular x-ray dichroism spectra at L2,3 edges of rare-earth compounds

被引：12

作者：

Matsuyama, H

Fukui, K

Okada, K

Harada, I ^{[1
]}

Kotani, A

机构：

[1] Okayama Univ, Dept Phys, Okayama 7008530, Japan

[2] Univ Tokyo, ISSP, Minato Ku, Tokyo 1068666, Japan

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 1998年 / 92卷 / 1-3期

关键词：

core level spectroscopy; X-ray dichroism; rare-earth compounds; exchange interactions;

D O I：

10.1016/S0368-2048(98)00095-4

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

We report a systematic interpretation of the trend observed in the magnetic circular X-ray dichroism (MCXD) at the L-2,L-3 edges for the entire series of rare-earth elements. It is shown that the MCXD spectra consisting mainly of the electric dipole transition are dominated by the enhancement of the dipole matrix element as well as by the polarization effect of the 5d ground state, both of which are due to the 4f-5d exchange interaction. A complemental contribution from the electric quadrupole transition is found to be appreciable, by reproducing the experimental spectra as a superposition of both contributions. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：31 / 34

页数：4

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