A nuclear magnetic resonance study was made of H in this metallic glass in order to establish the temperature dependence of the mean H atom jump-rate. The temperature and frequency dependences of the H spin-lattice relaxation rates and (at 3 temperatures) the H atom translational tracer diffusion coefficient were measured. The pulsed-field gradient simulated-echo technique was used to measure the diffusivity (table 201). The atomic jump rates which were deduced from the diffusivity measurements were consistent with those which were calculated from relaxation data. This indicated that translational diffusion was responsible for H spin-lattice relaxation. It was shown that a distribution of activation energies, about a mean energy of 0.46eV/atom, explained the relaxation rate data. The width (0.12eV) and the mean energy of the distribution were independent of temperature.

Hydrogen Diffusion in the Metallic Glass a-Zr3RhH3.5. J.T.Markert, E.J.Cotts, R.M.Cotts: Physical Review B, 1988, 37[11], 6446-52