Study of 57Fe Mössbauer effect in RFe2Zn20 (R = Lu, Yb, Gd)

Sergey L. Bud'ko, Tai Kong, Xiaoming Ma, Paul C. Canfield

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

We report measurements of 57Fe Mössbauer spectra for RFe2Zn20 (R = Lu, Yb, Gd) from ∼4.5 K to room temperature. The obtained isomer shift values are very similar for all three compounds, their temperature dependence was analyzed within the Debye model and resulted in an estimate of the Debye temperatures of 450-500 K. The values of quadrupole splitting at room temperature change with the cubic lattice constant a in a linear fashion. For GdFe2Zn20, ferromagnetic order is seen as an appearance of a sextet in the spectra. The 57Fe site hyperfine field for T → 0 was evaluated to be ∼2.4 T.

Original languageEnglish (US)
Article number336003
JournalJournal of Physics Condensed Matter
Volume27
Issue number33
DOIs
StatePublished - Aug 26 2015
Externally publishedYes

Keywords

  • Ferromagnetism
  • Hyperfine parameters
  • Mossbauer effect
  • RFeZn

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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