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

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

doi:10.1088/0953-8984/27/33/336003

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 journal › Article › peer-review

6 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 language	English (US)
Article number	336003
Journal	Journal of Physics Condensed Matter
Volume	27
Issue number	33
DOIs	https://doi.org/10.1088/0953-8984/27/33/336003
State	Published - Aug 26 2015
Externally published	Yes

Keywords

Ferromagnetism
Hyperfine parameters
Mossbauer effect
RFeZn

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

Access to Document

10.1088/0953-8984/27/33/336003

Cite this

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title = "Study of 57Fe M{\"o}ssbauer effect in RFe2Zn20 (R = Lu, Yb, Gd)",

abstract = "We report measurements of 57Fe M{\"o}ssbauer 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.",

keywords = "Ferromagnetism, Hyperfine parameters, Mossbauer effect, RFeZn",

author = "Bud'ko, {Sergey L.} and Tai Kong and Xiaoming Ma and Canfield, {Paul C.}",

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T1 - Study of 57Fe Mössbauer effect in RFe2Zn20 (R = Lu, Yb, Gd)

AU - Bud'ko, Sergey L.

AU - Kong, Tai

AU - Ma, Xiaoming

AU - Canfield, Paul C.

PY - 2015/8/26

Y1 - 2015/8/26

N2 - 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.

AB - 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.

KW - Ferromagnetism

KW - Hyperfine parameters

KW - Mossbauer effect

KW - RFeZn

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