Dielectric Relaxation Measurements in the Protonic Conductors SrCeO3 and SrZrO3

L. Zimmermann; S. Bausch; H.G. Bohn; W. Schilling

doi:doi:10.1051/jp4:19968152

Numéro		J. Phys. IV France Volume 06, Numéro C8, Décembre 1996 ICIFUAS 11 Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids


Page(s)		C8-699 - C8-702
DOI		https://doi.org/10.1051/jp4:19968152

ICIFUAS 11
Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids

J. Phys. IV France 06 (1996) C8-699-C8-702
DOI: 10.1051/jp4:19968152

Dielectric Relaxation Measurements in the Protonic Conductors SrCeO₃ and SrZrO₃

L. Zimmermann, S. Bausch, H.G. Bohn and W. Schilling

Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany

Abstract
Dielectric relaxation spectroscopy has been applied to the protonic conductors SrCe_0.95Yb_0.05O_3-α and SrZr_0.95Y_0.05O_3-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.