Hydrogen diffusion in C15ZrTi2H3.7 was measured at 230 to 450K by means of pulsed-field-gradient nuclear magnetic resonance. The temperature dependence of the diffusivity exhibited an Arrhenius behavior:

D(m2/s) = 1.8 x 10-8exp[-0.22(eV)/kT]

The results were in good agreement with values derived from the proton spin-lattice relaxation rate measurements on the same sample.

Pulsed-Field-Gradient NMR Study of Hydrogen Diffusion in the Hydrogen-Stabilized Laves Phase C15ZrTi2H3.7. W.Renz, G.Majer, A.V.Skripov: Journal of Alloys and Compounds, 1995, 224[1], 127-9