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Effective and Debye temperatures of Ti in TiC, TiO 2 , and TiH 2 </…

1987; American Physical Society; Volume: 35; Issue: 1 Linguagem: Inglês

10.1103/physrevb.35.8

1095-3795

I. Jacob, R. Moreh, O. Shahal, A. Wolf,

Nuclear Physics and Applications

The relative intensities of resonantly scattered gamma rays by $^{48}\mathrm{Ti}$, at room and liquid-nitrogen temperatures, were measured in TiC, ${\mathrm{TiO}}_{2}$, and ${\mathrm{TiH}}_{2}$ with use of the nuclear-resonance photon-scattering technique. The results enable determination of the effective temperature ${T}_{e}$ and the Debye temperature ${\ensuremath{\Theta}}_{\mathrm{D}}$ of Ti in the various compounds with assumption of the Debye model. A significant increase in ${T}_{e}$ and ${\ensuremath{\Theta}}_{\mathrm{D}}$ of the Ti atoms was observed in TiC and ${\mathrm{TiO}}_{2}$, while no detectable change in ${T}_{e}$ and ${\ensuremath{\Theta}}_{\mathrm{D}}$ was observed in pure Ti upon hydrogenation. The present results are discussed and compared with data obtained by other techniques.