500-600 K dilatation anomaly and Tc increase in YBa2Cu3Ox

E. A. Dul'Kin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


YBa2Cu3Ox bulk ceramics have been simultaneously investigated by the thermal expansion and the acoustic emission methods in the 500-600 K temperature range. An error of the differential dilatometer does not exceed 10-7. At T = 555 K, the dilatation anomaly accompanied by the acoustic emission has been observed and measured. Based on this measured anomaly, a value of Δc = -0.003 μm has been determined. And based on this Ac size the stoichiometric coefficient x = 7.01 has been calculated too. The possible mechanism for Tc increase in YBa2Cu3Ox as a result of closing b axis by the absorbed oxygen atoms during the samples' heating through 500-600 K has been discussed.

Original languageAmerican English
Pages (from-to)497-499
Number of pages3
JournalJournal of Superconductivity
Issue number4
StatePublished - 2001


  • Acoustic emission
  • Critical temperature (T)
  • Dilatation
  • Oxygen stoichiometry


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