Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 46 (1985) C10-163-C10-166
DOI: 10.1051/jphyscol:19851037
ULTRASONIC ATTENUATION FROM DISLOCATIONS IN A MAGNETIC FIELD
R. JEMIELNIAK and J. KRÓLIKOWSKIInstitute of Fundamental Technological Research, Polish Academy of Sciencies, Swietokrzyska 21, 00-049 Warszawa, Poland
Abstract
The attenuation of longitudinal ultrasonic waves has been measured in high purity Cu monocrystal in a magnetic field at the liquid helium temperature. The magnetic field dependence of dislocation damping has been observed. The dislocation damping force factor B has been evaluated by employing Granato-Lücke theory. The obtained results show that the magnetic field effected on dislocation drag force.