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The recently discovered icosahedral quasicrystal (i-QC) in the ternary Au–Al–Yb system at the composition Au51Al34Yb15 is formed only in as-cast alloys and is metastable with decomposition to other crystalline phases upon annealing at 700°C. Measuring the electronic transport coefficients (electrical resistivity, thermoelectric power, Hall coefficient), magnetic susceptibility and specific heat, we...
We report on the direct determination of the hydrogen self-diffusion constant D in the hydrogen-storage Zr 69.5 Cu 12 Ni 11 Al 7.5 alloy, prepared in both the icosahedral quasicrystalline and the bulk metallic glass phases, using the technique of NMR diffusion in a static fringe field of a superconducting magnet. The diffusion constant exhibits strong dependence on...
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