| Numéro |
J. Phys. Colloques
Volume 42, Numéro C5, Octobre 1981
ICIFUAS-7Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids |
|
|---|---|---|
| Page(s) | C5-671 - C5-676 | |
| DOI | https://doi.org/10.1051/jphyscol:19815103 | |
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-671-C5-676
DOI: 10.1051/jphyscol:19815103
Institut für Allgemeine Metallkunde und Metallphysik der RWTH Aachen und Sonderforschwzgsbereich 125, Aachen - Jülich - Köln, F.R.G.
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-671-C5-676
DOI: 10.1051/jphyscol:19815103
INFLUENCE OF IMPURITIES AND DISLOCATIONS ON ULTRASONIC ATTENUATION IN COPPER AND DILUTE COPPER ALLOYS AT LOW TEMPERATURES
P. Schrey, J. Schulz, H. Schmidt et D. LenzInstitut für Allgemeine Metallkunde und Metallphysik der RWTH Aachen und Sonderforschwzgsbereich 125, Aachen - Jülich - Köln, F.R.G.
Abstract
We have measured the phonon-electron attenuation αPE (10<f<200 MHz, long. wave in <111>) in Cu single crystals of widely different purity (20<RRR<20.000) after suppression of dislocation damping by γ-irradiation. The αPE-data are in agreement with Pippard's theory. The measurements on crystals doped with paramagnetic impurities (Fe,Mn) show an "ultrasonic Kondo-effect".