Campus Units

Physics and Astronomy, Ames Laboratory

Document Type

Article

Publication Version

Submitted Manuscript

Publication Date

8-4-2015

Journal or Book Title

Journal of Physics: Condensed Matter

Volume

27

Issue

33

First Page

336003

DOI

10.1088/0953-8984/27/33/336003

Abstract

We report measurements of Fe-57 Mossbauer spectra for RFe2Zn20 (R = Lu, Yb, Gd) from similar to 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 Fe-57 site hyperfine field for T -> 0 was evaluated to be similar to 2.4 T.

Comments

This is the version of the article before peer review or editing, as submitted by an author to Journal of Physics: Condensed Matter. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at DOI: 10.1088/0953-8984/27/33/336003. Posted with permission.

Copyright Owner

IOP Publishing Ltd

Language

en

File Format

application/pdf

Published Version

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