Anharmonicity of optical hydrogen vibrations in RhH

作者：Antonov V E^*; Antonova T E; Fedotov V K; Gnesin B A; Ivanov A S; Kolesnikov A I

来源：Journal of Alloys and Compounds, 2007, 446: 508-511.

DOI：10.1016/j.jallcom.2006.11.150

• interstitial alloys
• inelastic neutron scattering

A polycrystalline sample of nearly stoichiometric fee rhodium hydride was synthesised under high hydrogen pressure and then studied at ambient pressure and 5 K by inelastic neutron scattering in the range of energy transfers 35-380 meV. The fundamental band of optical hydrogen vibrations was shown to consist of a strong peak centred at 74 meV and broadened towards higher energies. The second and third band demonstrated essentially anharmonic behaviour. which is not typical of monohydrides of 3d- and 4d-metals with close-packed metal lattices.

• 出版日期2007-10-31