Abstract
We report on the measurements of the muon relaxation rate in gadolinium (Gd) in the critical regime down to T-TC=0.1 K. The results are compared to the predictions of mode‐coupling calculations for a uniaxial and dipolar ferromagnet. One observes that even if the uniaxiality in Gd is quite small, it should not be neglected in order to get a consistent description of our data. Most striking is the fact that these investigations support the assumption that above TC the muon resides on the tetrahedral interstitial sites and not on the octahedral sites which are chosen in the low temperature phase.
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Henneberger, S., Schreier, E., Kratzer, A. et al. μSR investigations of gadolinium in the paramagnetic regime near the ferromagnetic transition. Hyperfine Interactions 104, 301–306 (1997). https://doi.org/10.1023/A:1012664802023
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DOI: https://doi.org/10.1023/A:1012664802023