Sound behavior in high Tc superconductor Bi-Sr-Ca-Cu-O

K. J. Sun, F. R. Parker, W. P. Winfree, H. I. Syed, R. L. Meng, Y. Y. Sun, P. H. Hor, C. W. Chu

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


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.

Original languageEnglish
Pages (from-to)1293-1296
Number of pages4
JournalUltrasonics Symposium Proceedings
Publication statusPublished - 1990
EventProceedings of the IEEE 1990 Ultrasonics Symposium - Honolulu, HI, USA
Duration: 1990 Dec 41990 Dec 7

All Science Journal Classification (ASJC) codes

  • General Engineering


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