| Numéro |
J. Phys. Colloques
Volume 42, Numéro C5, Octobre 1981
ICIFUAS-7Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids |
|
|---|---|---|
| Page(s) | C5-1073 - C5-1077 | |
| DOI | https://doi.org/10.1051/jphyscol:19815166 | |
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-1073-C5-1077
DOI: 10.1051/jphyscol:19815166
Brunel University, Uxbridge, England
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-1073-C5-1077
DOI: 10.1051/jphyscol:19815166
INTERNAL FRICTION AT kHz-FREQUENCIES IN SUPERCONDUCTORS NEAR THE CRITICAL TEMPERATURE
P. FelthamBrunel University, Uxbridge, England
Abstract
An internal-friction peak, generally 0.1-1.0K wide, independent of frequency and amplitude, centred at Tc, and associated with the presence of dislocations, has been reported for lead, tantalum, niobium and other metals and alloys. Its characteristics are shown to be explicable in terms of a hysteretic loss arising from the enhancement of the background internal friction, due to the association of edge dislocations with filaments of superconducting phase.