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Observation of Hydride Mobility in the Transition‐Metal Oxide Hydride LaSrCoO 3 H 0.7
Author(s) -
Bridges C. A.,
FernandezAlonso F.,
Goff J. P.,
Rosseinsky M. J.
Publication year - 2006
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200601266
Subject(s) - hydride , materials science , diffusion , oxide , atmospheric temperature range , hydrogen , neutron scattering , crystallography , neutron , metal , analytical chemistry (journal) , nuclear physics , physics , chemistry , thermodynamics , organic chemistry , metallurgy
The diffusion of hydride anions in LaSrCoO 3 H 0.7 is measured for the first time. High‐resolution quasielastic neutron scattering (QENS) data reveals the onset of mobility above 675 K, associated with hopping between vacant sites in the hydride anion sublattice (see figure). The temperature range at which hopping takes place is similar to the temperature used for the synthesis of the material, and is associated with loss of hydrogen gas from the sample.