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Investigation of the proton migration mechanism in the perovskite proton conductor Ba3Ca1.18Nb1.82H0.2O8.83 by means of quasielastic neutron scattering |
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| Authors: | Ch. Karmonik R. Hempelmann J. Cook F. Güthoff |
| Affiliation: | 1. Physikalische Chemie, Universit?t des Saarlandes, Saarbrücken, Germany 2. Institute Laue Langevin, Grenoble, France 3. Hahn Meitner Institut, Berlin, Germany |
| Abstract: | We investigated the recently discovered high temperature proton conductor BaCa1.18Nb1.82H0.2O8.83 by means of quasielastic neutron scattering (QENS) using cold and thermal neutrons. From the former experiment we were able to propose models for the diffusion of the hydrogen whereas the latter measurement reveals the geometry of a localized motion of the protons. Paper presented at the 2nd Euroconference on Solid State Ionics, Funchal, Madeira, Portugal, Sept. 10–16, 1995 |
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