Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. IV France 06 (1996) C8-699-C8-702
Dielectric Relaxation Measurements in the Protonic Conductors SrCeO3 and SrZrO3L. Zimmermann, S. Bausch, H.G. Bohn and W. Schilling
Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
Dielectric relaxation spectroscopy has been applied to the protonic conductors SrCe0.95Yb0.05O3-α and SrZr0.95Y0.05O3-α. In both systems two different types of relaxation peaks were observed which are characteristic of the wet (proton containing) and dry (proton free) state of the samples. They correspond to peaks found by mechanical relaxation. This shows that the defects underlying the relaxation mechanism possess both an electric and an elastic dipole moment thus giving rise to both dielectric and mechanical relaxation.
© EDP Sciences 1996