Ultrasonic measurements on polycrystalline YBa2Cu3O7

Keun J. Sun, Moises Levy, Bimal K. Sarma, P. H. Hor, R. L. Meng, Y. Q. Wang, C. W. Chu

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Temperature dependent ultrasonic attenuation data of polycrystalline YBa2Cu3O7 at 10 MHz show a plateau between 220 and 250 K, and slope changes at 263, 135 and 97 K. The attenuation does not display a sharp decrease at Tc as would be described in the BCS theory. Around 255 K, the sound velocity in the sample increases from its room temperature value by more than 10%.

Original languageEnglish
Pages (from-to)541-544
Number of pages4
JournalPhysics Letters A
Issue number9
Publication statusPublished - 1988 Sep 12

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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