Elastic constants of high temperature superconductor YBa2Cu3Ox

Yasuhide Shindo, Naoki Niwa, Hideaki Nozaki, Hassel M. Ledbetter

Research output: Contribution to journalArticlepeer-review


We calculate the defect-free elastic constants of high temperature ceramic superconductor YBa2Cu3Ox from measured elastic constants of bulk YBa2Cu3Ox which contains numerous microcracks and voids. Defect-free elastic constants represent long-wavelength acoustic phonons and relate to a variety of solid-state-phenomena such as Debye temperature, thermal expansivity and theoretical strength. By the use of the self-consistent method or the differential method, we eliminate the effect of random distribution of microcracks on the elastic constants of YBa2Cu3Ox. The scattered-plane-wave method is also used to eliminate the effect of voids and then obtain the defect-free elastic constants. Numerical calculations are carried out and the influence of the microcracks and the voids on the elastic constants of YBa2Cu3Ox is discussed in detail.

Original languageEnglish
Pages (from-to)258-262
Number of pages5
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Issue number3
Publication statusPublished - 1995

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


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