Damping of ultrasonic longitudinal vibrations in the superconducting (BiPb)2Sr2Ca2Cu3Oy, ceramic has been studied in the 6-290 K temperature range by the composite oscillator technique at vibrational strain amplitudes of up to 3 × 10-5. The amplitude-dependent internal friction, which is observed to exist at both room and helium temperatures, was found to be practically absent in the 100-140 K interval. The results obtained are attributed to specific features of dislocation motion in this material. Data on the effect of magnetic field on the acoustic characteristics at 7 K are presented.
|Original language||English (US)|
|Number of pages||6|
|Journal||Physics of the Solid State|
|State||Published - Nov 1 1996|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics