Phonon dispersion relations in KBr and KBr:OH have been measured at 26 K on the PRISMA spectrometer (ISIS facility, UK). The anomalous behaviour found for the LA [0 zeta 0] branch in KBr:OH can be interpreted as a coupled phonon-impurity mode. the OH internal mode having frequency near 7 meV and E(g) symmetry.
Low energy modes in OH- doped KBr investigated by inelastic neutron scattering
PETRILLO, Caterina;
1992
Abstract
Phonon dispersion relations in KBr and KBr:OH have been measured at 26 K on the PRISMA spectrometer (ISIS facility, UK). The anomalous behaviour found for the LA [0 zeta 0] branch in KBr:OH can be interpreted as a coupled phonon-impurity mode. the OH internal mode having frequency near 7 meV and E(g) symmetry.File in questo prodotto:
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