X-ray magnetic circular dichroism at L edges of Er in laves phase compounds

Isao Harada, Atsushi Fujiwara, Akio Kotani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

X-ray magnetic circular dichroism (XMCD) of the Er L absorption-edges is studied in the Laves phase compound ErFe2 in order to confirm the mechanism proposed: XMCD spectra are dominated by the electric dipole transition from the core 2p states to the magnetically polarized Er 5d states, which are caused by (i) the intra-atomic exchange interaction of 4f electrons, with the enhancement of the dipole matrix element, as well as by (ii) the hybridization with the spin-polarized Fe 3d states. In addition, (iii) the electric quadrupole transition contributes appreciably. We point out that one can observe a novel temperature effect on the XMCD spectrum of Er at L2 edge, since it consists of the contributions (i), (ii) and (iii) having a comparable order of magnitude but different signs and temperature dependences. We discuss the resultant temperature dependence of the XMCD spectrum with that recently observed in ErFe2.

Original languageEnglish
Title of host publicationX-RAY ABSORPTION FINE STRUCTURE - XAFS13
Subtitle of host publication13th International Conference
Pages425-427
Number of pages3
DOIs
Publication statusPublished - Mar 26 2007
EventX-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference - Stanford, CA, United States
Duration: Jul 9 2006Jul 14 2006

Publication series

NameAIP Conference Proceedings
Volume882
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherX-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference
CountryUnited States
CityStanford, CA
Period7/9/067/14/06

Keywords

  • Er-L edges
  • XAS
  • XMCD

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Harada, I., Fujiwara, A., & Kotani, A. (2007). X-ray magnetic circular dichroism at L edges of Er in laves phase compounds. In X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference (pp. 425-427). (AIP Conference Proceedings; Vol. 882). https://doi.org/10.1063/1.2644547