X-ray magnetic circular dichroism study on

A. Delobbe; A.-M. Dias; M. Finazzi; L. Stichauer; J.-P. Kappler; G. Krill

doi:10.1209/epl/i1998-00359-2

All issues

Volume 43 / No 3 (August I 1998)

Europhys. Lett., 43 3 (1998) 320-325

Abstract

Issue		Europhys. Lett. Volume 43, Number 3, August I 1998


Page(s)		320 - 325
Section		Condensed matter: electronic structure, electrical, magnetic and optical properties
DOI		https://doi.org/10.1209/epl/i1998-00359-2
Published online		01 September 2002

Europhys. Lett., 43 (3), pp. 320-325 (1998)

X-ray magnetic circular dichroism study on $\rm CeFe_2$

A. Delobbe¹, A.-M. Dias¹, M. Finazzi², L. Stichauer³, J.-P. Kappler¹^,4 and G. Krill¹

¹ LURE, Bât. 209D, Université Paris-Sud - 91405 Orsay, France
² ESRF, BP 220 - 38043 Grenoble, France
³ Sincrotrone Trieste - Strada Statale per Basovizza 14, 34012 Trieste, Italy
⁴ IPCMS-GEMME - 23 rue du Loess, 67037 Strasbourg, France

Received: 22 December 1997
Accepted: 9 June 1998

Abstract

X-ray magnetic circular dichroism at the Fe $L_{2,3}$ , Ce $M_{4,5}$ and Ce $L_{2,3}$ absorption edges of $\rm CeFe_2$ are reported. Application of the sum rules yields both the magnitude and the direction of the magnetic contributions (Fe 3d, Ce 5d and Ce 4f) to the total moment in $\rm CeFe_2$ . A total Ce magnetic contribution of $-0.29\mu_{\rm B}$ ( $M^{5d}=-0.13\mu_{\rm B}$ , $M^{4f}=-0.16\mu_{\rm B}$ ) and a ratio for the 4f contribution $\langle L_z\rangle/\langle S_z\rangle \approx -1$ are found, which confirms that the 4f states are highly hybridised in $\rm CeFe_2$ . These results are in good agreement with previously published LSDA calculations.

PACS: 71.20.Lp – Intermetallic compounds / 75.30.Mb – Valence fluctuation, Kondo lattice, and heavy-fermion phenomena / 78.70.Dm – X-ray absorption spectra

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