Structure and lattice dynamics of titanium hydrides due to thermobaric treatment |
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| Authors: | I. O. Bashkin A. I. Kolesnikov E. G. Ponyatovsky |
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| Affiliation: | Institute of Solid State Physics of the Russian Academy of Sciences , 142432, Chernogolovka, Moscow District, Russia |
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| Abstract: | Abstract An in situ X-ray diffraction study of the high-pressure ζ-phase evidenced a fct Ti sublattice. In the fco X-phase quenched under pressure, H atoms are displaced to octahedral sites, and the energy of H optic peak (at ～ 75 meV) is half that in other Ti-H phases where H occupy tetrahedral sites. Phase transformations on heating of x-TiH(D)～0.75 were studied by neutron diffraction, small angle and inelastic neutron scattering (INS). Bound multiphonons were observed in the INS spectra of ordered γ-TiH(D). |
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