Resonant fluorescence emission of Mn Kβ in quasicrystals

Yasuhiro Watanabe, Junpei Tamura Okada, Hironobu Shoji, Susumu Nanao

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

Resonant X-ray emission spectra of Mn Kβ1,3 (3p · 1s) were measured near the Mn K absorption edge for quasicrystalline icosahedral Al-Pd-Mn, icosahedral Al-Pd-Mn-B, icosahedral Al-Mn-Si, decagonal Al-Mn-Fe-Ge and crystalline α-Al-Mn-Si. Except for the Raman scattering energy region, the peak energy of Kβ1,3 is independent of incident photon energy for all the samples. The shape was also unchanged. A Kβ' subpeak, which is caused by the splitting between the density of states of the high spin and the low spin in the 3p band, appeared in all the quasicrystal samples with lower intensity than those of the Mn oxides in spite of the fact that Mn atoms in the decagonal Al-Mn-Fe-Ge and the icosahedral Al-Pd-Mn-B are in a ferromagnetic state. In the profile of the icosahedral Al-Pd-Mn, α-Al-Mn-Si and decagonal Al-Mn-Fe-Ge, a clear hump was observed at the energy between Kβ1,3 and Kβ'. In the emission spectra of Mn Kβ5 (3d → 1s), peak positions were 1.5 eV lower for the ferromagnetic quasicrystals than those of the other quasicrystals.

Original languageEnglish
Pages (from-to)422-426
Number of pages5
JournalJournal of Alloys and Compounds
Volume342
Issue number1-2
DOIs
Publication statusPublished - 2002 Aug 14
EventQC2001 - Sendai, Japan
Duration: 2001 Sep 242001 Sep 28

Keywords

  • Al-Mn-Fe-Ge
  • Al-Mn-Si
  • Al-Pd-Mn
  • Quasicrystal
  • Resonant X-ray emission spectroscopy

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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