Elastic and nonlinear acoustic properties of YBa2Cu3O7-x ceramics with different oxygen contents
- 1. Schools of Physics and Material Science, University of Bath, Claverton Down, Bath BA2 7AY (United Kingdom)
- 2. Hacettepe University, Department of Physics, Beytepe, 06532 Ankara (Turkey)
- 3. Energy Technology Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
Description
The pressure derivatives of the natural velocities and bulk modulus of YBa2Cu3O6.3, YBa2Cu3O6.6, and YBa2Cu3O6.94 tend to decrease with increasing oxygen content. Using the results obtained in this work and some data published previously, we have shown that the pressure derivative (∂Bs/∂P)P=0 of the adiabatic bulk modulus of YBa2Cu3O7-x is correlated strongly with sample porosity and decreases approximately linearly with decreasing n/Pm, the ratio of porosity n to the maximum applied pressure Pm. We have also shown that values of the mean acoustic mode Grueneisen parameter γel of ceramic superconducting compounds, determined by ultrasonic measurements, have a linear relationship with the porosity n. The effects of oxygen contents on the pressure derivative (∂BS/∂P)P=0 of YBa2Cu3O7-x are also discussed
Additional details
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter
- Journal Volume
- 52
- Journal Issue
- 5
- Journal Page Range
- p. 3711-3726.
- ISSN
- 0163-1829
- CODEN
- PRBMDO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 26075433
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; ELASTICITY; FREQUENCY DEPENDENCE; HIGH-TC SUPERCONDUCTORS; OXYGEN; TEMPERATURE DEPENDENCE; ULTRASONIC WAVES; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELEMENTS; MECHANICAL PROPERTIES; NONMETALS; OXIDES; OXYGEN COMPOUNDS; SOUND WAVES; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS