| Numéro |
J. Phys. Colloques
Volume 42, Numéro C5, Octobre 1981
ICIFUAS-7Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids |
|
|---|---|---|
| Page(s) | C5-259 - C5-263 | |
| DOI | https://doi.org/10.1051/jphyscol:1981537 | |
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-259-C5-263
DOI: 10.1051/jphyscol:1981537
1 Physico-Technical Institute of Low Temperatures, Kharkov, U.S.S.R.
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-259-C5-263
DOI: 10.1051/jphyscol:1981537
ON THE INTERNAL FRICTION IN ANTIMONY CAUSED BY UNPINNING OF OVERDAMPED AND UNDERDAMPED DISLOCATIONS
P.P. Pal-Val1, V.Ya. Platkov1 et V.I. Startsev11 Physico-Technical Institute of Low Temperatures, Kharkov, U.S.S.R.
Abstract
It is found and investigated an anomalous behaviour of the amplitude dependent internal friction at temperatures below - 30 K in antimony single crystals of different purity. The results evidence that in this temperature range inertial effects play a dominant role in the process of unpinnig of moving dislocations as a result of their transition from the overdamped to the underdamped state.