Abstract
High resolution neutron scattering studies of vibrational spectra (2-800 meV) were carried out on the in -, delta ' and delta -phases of titanium hydride, obtained after high pressure treatment. The observed splitting of the fundamental optic peak in the delta -phase spectrum can be explained by a strong H-H interaction along the c-axis. Well pronounced features are seen on the low energy side of the two- and three-phonon optic bands. These are assigned to bound bi- and tri-phonon excitations. This is the first observation of bi- and tri-phonons in metal hydrides.
| Original language | English |
|---|---|
| Article number | 002 |
| Pages (from-to) | 5927-5936 |
| Number of pages | 10 |
| Journal | Journal of Physics Condensed Matter |
| Volume | 3 |
| Issue number | 32 |
| DOIs | |
| State | Published - 1991 |
| Externally published | Yes |