Direct determinations of H diffusion, in quasicrystalline H-storage alloys, were performed by using the technique of nuclear magnetic resonance diffusion in the static fringe field of a superconducting magnet. The diffusion constant of partially quasicrystalline Zr69.5Cu12Ni11Al7.5 exhibited a significant decrease with increasing H-to-metal ratio, due to the creation of defects in the lattice during H loading. The alloy structure (amorphous, icosahedral or approximant) appeared to be less important in H diffusivity.

Hydrogen Diffusion in Partially Quasicrystalline Zr69.5Cu12Ni11Al7.5. T.Apih, V.Khare, M.Klanjšek, P.Jeglič, J.Dolinšek: Physical Review B, 2003, 68[21], 212202 (4pp)