Temperature-dependent ultrasound measurements were performed on a two-phased sintered sample of Bi-Sr-Ca-Cu-O. Attenuation anomalies and velocity changes were observed for 10-MHz longitudinal waves around the two superconducting phase transitions. These features of sound behavior at Tc, also observed in other 90-K high-Tc systems, may result from the direct interaction of intrinsic properties of high-temperature superconductors with sound. A spin-phonon interaction is proposed to interpret the acoustic behavior.
|頁（從 - 到）||1293-1296|
|期刊||Ultrasonics Symposium Proceedings|
|出版狀態||Published - 1990|
|事件||Proceedings of the IEEE 1990 Ultrasonics Symposium - Honolulu, HI, USA|
持續時間: 1990 十二月 4 → 1990 十二月 7
All Science Journal Classification (ASJC) codes
- 工程 (全部)