Local coordination and vibrational properties of hydride ions in a novel oxide-hydride

This proposal requests beamtime on the inelastic neutron scattering spectrometers TOSCA and MAPS to investigate the local coordination and vibrational dynamics of hydride ions in the recently discovered LaxSr4-xNiRuO4H4 (x = 0.5, 1, and 1.5) oxide-hydride phases. Besides being of pure fundamental interest, one of the interests in these materials is their inherent hydride-ion conductivity, which makes them of interest for various technological devices. The aim of the research is to determine how the atomic-scale structure and vibrational dynamics and how it depends on cation doping (x), and relate these properties to the hydride-ion mobility of the materials.