Vibrational spectrum of magnesium hydride
نویسندگان
چکیده
The vibrational spectrum of hydrogen atoms in magnesium hydride has been studied by means of inelasticneutron and Raman-scattering experiments between 12 and 295 K. After careful evaluation of multiple scattering and multiphonon contributions, we provide a vibrational frequency spectrum up to 180 meV and the mean-square displacement of hydrogen atoms. The inelastic light scattering spectra of MgH2 powders show three Raman allowed modes (A1g, B1g, and Eg) and some smaller features that can be related with secondorder and disorder-induced processes.
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