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

In this document 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.
Authors:
 [1] ;  [1] ;  [2] ;  [1]
  1. Ames Lab., Ames, IA (United States)
  2. Ames Lab., Ames, IA (United States); Lanzhou Univ. Gansu Province (China). Institute of Applied Magnetics
Publication Date:
OSTI Identifier:
1221920
Report Number(s):
IS-J--8763
Journal ID: ISSN 0953-8984
Grant/Contract Number:
AC02-07CH11358
Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Condensed Matter
Additional Journal Information:
Journal Volume: 27; Journal Issue: 33; Journal ID: ISSN 0953-8984
Publisher:
IOP Publishing
Research Org:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Mössbauer effect; RFe2Zn20