Theory of Magnetic Circular X-Ray Dichroism at the Fe K-Edge in Rare-Earth Iron Garnets

Isao Harada, Tomoaki Suzuki, Akio Kotani

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A mechanism is proposed for the magnetic circular X-ray dichroism (MCXD) at the pre-peak of the Fe K-edge in rare-earth iron garnets. It is found based on a cluster model that, at the pre-peak, the hybridization between the 3d state and the 4p state of an Fe ion on the tetrahedral site through the ligand 2p states is responsible for the weak electric-dipole absorption while the combined effect of the spin-orbit interaction and the spin polarization in the 3d states give rise to its MCXD. In addition, the configuration interaction is shown to be important in explaining the asymmetric dispersion-type MCXD spectra observed. The effects of the core hole as well as of the band character of the 4p states are discussed briefly in connection with MCXD observed in the main K-edge region.

Original languageEnglish
Pages (from-to)3016-3020
Number of pages5
JournalJournal of the Physical Society of Japan
Volume65
Issue number9
Publication statusPublished - 1996

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garnets
dichroism
rare earth elements
iron
x rays
spin-orbit interactions
electric dipoles
configuration interaction
ligands
polarization
ions

Keywords

  • Electric-dipole transition
  • Hybridization
  • MCXD
  • Rare-earth iron garnet

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Theory of Magnetic Circular X-Ray Dichroism at the Fe K-Edge in Rare-Earth Iron Garnets. / Harada, Isao; Suzuki, Tomoaki; Kotani, Akio.

In: Journal of the Physical Society of Japan, Vol. 65, No. 9, 1996, p. 3016-3020.

Research output: Contribution to journalArticle

Harada, Isao ; Suzuki, Tomoaki ; Kotani, Akio. / Theory of Magnetic Circular X-Ray Dichroism at the Fe K-Edge in Rare-Earth Iron Garnets. In: Journal of the Physical Society of Japan. 1996 ; Vol. 65, No. 9. pp. 3016-3020.
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