Related Experiment Video
Updated: Apr 6, 2026

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
Published on: October 9, 2012
Study of ⁵⁷Fe Mössbauer effect in RFe₂Zn₂₀ (R = Lu, Yb, Gd)
Sergey L Bud'ko1, Tai Kong, Xiaoming Ma
1Ames Laboratory US DOE and Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA.
Abstract:
We report measurements of (57)Fe 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 (57)Fe site hyperfine field for → was evaluated to be ∼2.4 T.
Related Concept Videos
Ferromagnetism
π Electron Effects on Chemical Shift: Overview
Atomic Nuclei: Magnetic Resonance
Atomic Emission Spectroscopy: Overview
Raman Spectroscopy: Overview
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
Atomic Radii and Effective Nuclear Charge

