Proton spin-lattice relaxation measurements were carried out on β-phase hydrides at temperatures ranging from 100 to 300K and resonance frequencies of 7, 11 and 47MHz. The measurements for PdH0.7 indicated an activation energy for diffusion of 0.228eV, at temperatures above 195K. The interpretation of the data was considered to be uncertain at lower temperatures.

D.A.Cornell, E.F.W.Seymour: Journal of the Less-Common Metals, 1975, 39[1], 43-54