Expansion of high Tc superconducting ceramics
Abstract
The expansion of high-Tc superconducting ceramics consists of thermal and compositional contributions. By measuring isothermal expansion in atmospheres of different P O2 1S the effects can be separated. The coefficients of thermal expansion for YBa2Cu3O(x), YBa2Cu4O8, Pb2Sr2YCu3O8 and Bi2Sr(1.5)Ca(1.5)Cu2O8 are similar and do not depend greatly on oxygen composition. The coefficients of compositional expansion vary greatly from Bi2Sr(1.5)Ca(1.5)Cu2O8 to Pb2Sr2YCu3O8. Possible structural explanation for the differences are discussed.
- Publication:
-
Superconductivity and Ceramic Superconductors II
- Pub Date:
- 1991
- Bibcode:
- 1991sccs.proc..479O
- Keywords:
-
- Bismuth Oxides;
- High Temperature Superconductors;
- Lead Oxides;
- Thermal Expansion;
- Yttrium Oxides;
- Barium Oxides;
- Calcium Oxides;
- Copper Oxides;
- Oxygen;
- Strontium Compounds;
- Solid-State Physics