INVESTIGADORES
SANTISTEBAN Javier Roberto
artículos
Título:
Vibrational spectrum of magnesium hydride
Autor/es:
J R SANTISTEBAN; G JCUELLO; J DAWIDOWKSI; A FAINSTEIN; H. A. PERETTI; A IVANOV; F J BERMEJO
Revista:
PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS
Editorial:
American Physical Society
Referencias:
Año: 2000 vol. 62 p. 37 - 40
ISSN:
0163-1829
Resumen:
The vibrational spectrum of hydrogen atoms in magnesium hydride has been studied by means of inelastic-neutron 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 second-order and disorder-induced processes.
