Neutron spectroscopy of TiH0.74after high pressure treatment
- 12 August 1991
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 3 (32) , 5927-5936
- https://doi.org/10.1088/0953-8984/3/32/002
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.Keywords
This publication has 12 references indexed in Scilit:
- Neutron Scattering Investigation of Metastable Phases of Titanium Hydride after Quenching under High Pressure*Zeitschrift für Physikalische Chemie, 1989
- Neutron diffraction study of the metastable γ titanium deuterideActa Metallurgica, 1988
- Phase transformations in the TiH system at high pressuresJournal of the Less Common Metals, 1987
- The H−Ti (Hydrogen-Titanium) systemBulletin of Alloy Phase Diagrams, 1987
- Strong anharmonicity effects for vibrations in crystals with impurities: local biphonons and triphononsInternational Reviews in Physical Chemistry, 1986
- Three-phonon bound local states in imperfect crystalsSolid State Communications, 1985
- New Phase Transitions in Hydrides of the I-A, III-A, and IV-A Group Metals*Zeitschrift für Physikalische Chemie, 1985
- Direct determination of the anharmonic vibrational potential for H in PdZeitschrift für Physik B Condensed Matter, 1984
- On the inverse isotope effect in superconducting (Zr, Hf)-(H, D) systemJournal of Physics F: Metal Physics, 1984
- Incoherent inelastic neutron scattering studies of transition-metal hydridocarbonyls. Part 1.—Cs+[HCo6(CO)15]–Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics, 1983