Abstract
Quasi-elastic and inelastic neutron scattering on CuTi amorphous hydrides has revealed some aspects of the diffusive and vibrational dynamics of hydrogen. Part of the hydrogen atoms perform a fast localized motion occurring on a short length scale. The activation energy of this motion is around 0.3 eV. The high frequency mode around 140 meV reveals the preferential filling of Ti4 tetrahedra at low concentration of hydrogen. The temperature dependence of this mode indicates the formation of more Ti4 sites as the temperature is increased. The metal vibrational mode around 20 meV is enhanced by the introduction of hydrogen, giving a measure of the hydrogen-metal interaction in these amorphous hydrides.
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Dianoux, A.J., Rodmacq, B., Mangin, P., Chamberod, H. (1986). Quasi-Elastic and Inelastic Neutron Scattering Study of CuTi Amorphous Hydrides. In: Bambakidis, G., Bowman, R.C. (eds) Hydrogen in Disordered and Amorphous Solids. NATO ASI Series, vol 136. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-2025-6_25
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DOI: https://doi.org/10.1007/978-1-4899-2025-6_25
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