Anisotropy of x-ray absorption cross section in CeCoGe3 single crystal

Andrei Rogalev, Fabrice Wilhelm, Elena Ovchinnikova, Aydar Enikeev, Roman Bakonin, Ksenia Kozlovskaya, Alexey Oreshko, Dai Aoki, Vladimir E. Dmitrienko

Research output: Contribution to journalArticlepeer-review

Abstract

Absorption spectra of two orthogonal linearly polarized X-rays in a single CeCoGe3 crystal were measured at the ID12 beamline of the ESRF for the energies near the K-edges of Ge, Co and near the L23 edges of Ce. The X-ray natural linear dichroism (XNLD) was revealed in the vicinity of all the absorption edges, which indicates a splitting of electronic states in a crystalline field. Mathematical modelling in comparison with experimental data allowed the isotropic and anisotropic parts of atomic absorption cross section in CeCoGe3 to be determined near all measured absorption edges. The calculations also show that the “average” anisotropy of the cross section close to the Ge K-edge revealed in the experiment is less than the partial anisotropic contributions corresponding to Ge atoms in two different Wyckoff positions.

Original languageEnglish
Article number544
JournalCrystals
Volume11
Issue number5
DOIs
Publication statusPublished - 2021 May

Keywords

  • Anisotropy of x-ray susceptibility
  • X-ray absorption
  • X-ray linear dichroism

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Inorganic Chemistry

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