Abstract

Quasi-elastic neutron-scattering measurements (QNS) on the ZrTi 2H 3.6 C-15 Laves phase compound have been carried out on the back-scattering spectrometer IN10 at the Institute Laue Langevin (ILL) in Grenoble. A single Lorentzian has been found to fit the data for all temperatures and Q-values. The Q-dependence of the data can be fitted with a basic Chudley-Elliot model, averaging over all directions due to the polycrystalline nature of the sample, with a jump length of 2.8 Å. This figure is very close to the distance between nearest-neighbors (n.n.) e-sites (1Zr-3Ti), 2.9 Å, showing this site as the preferred one for hydrogen in the C-15 Laves phase ZrTi 2H x .

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