Abstract
The measurements of the proton (NMR) spinlattice relaxation times have been made in a series of ytterbium hydrides, YbH x . Results are reported forx=1.80, 1.95, 2.00 and 2.62 and temperatures 4.2≦T≦297K. In the orthorhombic phase (1.80≦x≦2.00), the spin-lattice relaxation times are dominated by the hyperfine interaction of protons with conduction electrons and the spin diffusion mechanism. In the cubic phase (x=2.62), the relaxation times are five orders of magnitude shorter than in the orthorhombic one. This is interpreted in terms of the proton coupling with the Yb3+ ion spin fluctuations.
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Żogaŀ, O.J., Valentin, H., Gotschy, B. et al. Proton spin-lattice relaxation times in ytterbium hydrides. Z. Physik B - Condensed Matter 95, 311–316 (1994). https://doi.org/10.1007/BF01343958
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DOI: https://doi.org/10.1007/BF01343958