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Figure 6
(a) Room temperature data of the strain measured in Dy in low-α mode reveal the acoustic oscillations of the Dy film. The inset shows a simulation of the strain in the heterostructure where the color represents the strain: blue encodes compressive strain, red expansive strain. Whenever the average strain in the Dy layer is large, the measurement shows a maximum. (b) Measured strain in the Dy layer as a function of the sample temperature. For temperatures below the Néel temperature a remarkable transient negative thermal expansion is observed. (c) Transient peak width change of the dysprosium peak as a function of the sample temperature.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 28| Part 3| May 2021| Pages 948-960
https://doi.org/10.1107/S1600577521002484
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