J. Phys. Colloques
Volume 48, Numéro C8, Décembre 1987Fifth European Conference on Internal Friction and Ultrasonic Attenuation in Solids
|Page(s)||C8-489 - C8-494|
J. Phys. Colloques 48 (1987) C8-489-C8-494
ULTRASONIC ATTENUATION IN MIXED STATE OF NIOBIUMJ. DOMINEC et K. MÍSEK
Institute of Physics of the Czechoslovak Academy of Sciences, Na Slovance 2, 180 40 Praha 8, Czechoslovakia
We have investigated the attenuation of ultrasonic waves in the mixed state of niobium, where a remarkable dip appears near the lower critical field . The measurement has been performed on one sample for various orientations of the wave vector and of the principal crystallographic axes of the sample with respect to external magnetic field.