The vibrational density of states of hydrogen trapped at dislocations in deformed

PdH0.0008 was measured at 4 and 295K with incoherent inelastic neutron scattering.

The vibrational density of states at 4K exhibits features characteristic of the lowtemperature

β-Pd hydride phase while the characteristic peak in the 295K density

of states corresponded to the solid-solution α-Pd phase. This was evidence of an α

→ β transition at low temperature within the distorted environment of dislocations.

Vibrational Density of States Measurement of Hydrogen Trapped at Dislocations

in Deformed PdH0.0008. B.J.Heuser, T.J.Udovic, H.Ju: Physical Review B, 2008,

78[21], 214101