Study of Vortex Motion in a Sintered High Tc Superconductor by a Vibrating Reed Technique

L. Richard; J. Woirgard; T. Aouaroun; J. Rabier

doi:doi:10.1051/jp4:19968107

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)		C8-493 - C8-496
DOI		https://doi.org/10.1051/jp4:19968107

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

J. Phys. IV France 06 (1996) C8-493-C8-496
DOI: 10.1051/jp4:19968107

Study of Vortex Motion in a Sintered High T_c Superconductor by a Vibrating Reed Technique

L. Richard¹, J. Woirgard¹, T. Aouaroun² and J. Rabier¹

¹ Université de Poitiers, SP2MI, Laboratoire de Métallurgie physique, URA 131 du CNRS, Bd. 3, Téléport 2, BP. 179, 86960 Futuroscope cedex, France
² Laboratoire CRISMAT, URA 1318 du CNRS, ISMRA, Université de Caen, Bd. Maréchal Juin, 14050 Caen cedex, France

Abstract
Using a vibrating reed technique in a subresonant excitation mode, dissipation mechanisms have been studied in sintered YBa₂Cu₃O_7-x superconductors with different grain sizes. Experimental results are interpreted within the critical state model. Results deduced from vibrating reed technique are compared with ac susceptibility measurements. It is shown that both techniques give consistent results.