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 publicationAIP Conference Proceedings
Pages425-427
Number of pages3
Volume882
DOIs
Publication statusPublished - 2007
EventX-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference - Stanford, CA, United States
Duration: Jul 9 2006Jul 14 2006

Other

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

Fingerprint

Laves phases
dichroism
x rays
temperature dependence
electric dipoles
temperature effects
quadrupoles
dipoles
augmentation
matrices
electrons
interactions

Keywords

  • Er-L edges
  • XAS
  • XMCD

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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

X-ray magnetic circular dichroism at L edges of Er in laves phase compounds. / Harada, Isao; Fujiwara, Atsushi; Kotani, Akio.

AIP Conference Proceedings. Vol. 882 2007. p. 425-427.

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

Harada, I, Fujiwara, A & Kotani, A 2007, X-ray magnetic circular dichroism at L edges of Er in laves phase compounds. in AIP Conference Proceedings. vol. 882, pp. 425-427, X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference, Stanford, CA, United States, 7/9/06. https://doi.org/10.1063/1.2644547
Harada I, Fujiwara A, Kotani A. X-ray magnetic circular dichroism at L edges of Er in laves phase compounds. In AIP Conference Proceedings. Vol. 882. 2007. p. 425-427 https://doi.org/10.1063/1.2644547
Harada, Isao ; Fujiwara, Atsushi ; Kotani, Akio. / X-ray magnetic circular dichroism at L edges of Er in laves phase compounds. AIP Conference Proceedings. Vol. 882 2007. pp. 425-427
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