Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. IV France 06 (1996) C8-465-C8-468
Nonlinear Effects of Sound Waves in High-Tc-SuperconductorsA. Geerkens and S. Ewert
Technical University of Cottbus, Lehrstuhl für Experimentalphysik, P.O. Box 101344, 03013 Cottbus, Gemany
High-Tc-superconductors are studied by measuring the ultrasonic attenuation and the relative change of the sound velocity in various applied magnetic fields. High sound amplitudes reveal nonlinear effects of the flux-line lattice. Due to the coupling of the flux lines to the sound waves, the occurring effects show the pinnimg behaviour of a high-Tc-superconductor. Especially the results for a textured ceramic Bi1.6Pb0.4Sr2Ca2Cu3Oy-superconductor are presented and discussed.
© EDP Sciences 1996