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- W2034646675 abstract "A series of ceramic silicide-hydrides was prepared and incoherent inelastic neutron scattering spectra were obtained. The family of hydrides was based on Y5Si3Hx. By increasing x in stages in the range 0.32–7.0, by partial substitution of yttrium by scandium and silicon by germanium, and by solid solution forming to make Y5Si3(X)yHx where X ≡ C, N, O, it was possible to obtain comparative spectra which showed that three hydrogen sites are available in the D88 structure. One site is the 6 metal coordinated octahedra (site 2), one is large and elongated in the c-direction (site 1), whilst the third is tetrahedral with 3:1 or 2:2 M:Si coordination (site 3). Hydrogen enters site 3 via the first two and the fast adsorption-desorption of one hydrogen per formula unit is linked to the movement from sites 1 and 2 to 3. The lack of dispersion shown by the modes suggests that hydrogen may not be bonded in a wholly metallic way despite its high mobility detected in this and earlier work." @default.
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- W2034646675 date "1991-08-01" @default.
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- W2034646675 title "An inelastic neutron scattering investigation of hydrogen sites in Y5Si3Hx ceramics" @default.
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- W2034646675 doi "https://doi.org/10.1016/0022-5088(91)90461-c" @default.
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