Nuclear magnetic resonance study of deuterium diffusion in ZrCr2Dx

Abstract Nuclear magnetic resonance measurements of 2 D spin lattice relaxation rates in C15-ZrCr 2 D x ( x = 0.29, 0.48 and 3.8) and C14-ZrCr 2 D 4.0 have been performed over the temperature range 110–450 K. The experimental results are analysed to obtain the electronic (Korringa) contributions to the relaxation rates and the parameters of deuterium diffusion. For C15-ZrCr 2 D x the deuterium mobility is found to decrease with increasing x . Comparison of the data for ZrCr 2 D x and ZrCr 2 H x shows that in compounds with nearly the same x the hopping rate of D atoms is lower than that of H atoms.