Softening of the phonon spectrum below the magnetic-phase-transition temperature
- 1 October 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 14 (7) , 3087-3089
- https://doi.org/10.1103/physrevb.14.3087
Abstract
Mössbauer studies of in Dy and Y at temperatures were performed. Giant dips in the temperature dependence of the recoil-free fraction and the thermal shift were observed below in Dy. In Y a regular flat behavior was observed. These results are interpreted as evidence for the large influence of the spin fluctuations on the phonon spectrum through the huge magnon-phonon coupling present in Dy and absent in Y.
Keywords
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