High Tc Superconductor YBa2Cu3Oy—Oxygen Content vs Tc Relation—
Abstract
High Tc superconductor YBa2Cu3Oy, having various oxygen contents have been examined by a.c. susceptibility, d.c. conductivity and Raman spectrum measurements. The Tc is greatly affected by the oxygen content, being lowered by decreasing oxygen content. Particularly, the Tc drops markedly when the compound takes a tetragonal form. To confirm the y vs temperature relation, the compound was reexamined by thermogravimetry. The new results cast doubt on our previous y value (6.5>y>5.8).
- Publication:
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Japanese Journal of Applied Physics
- Pub Date:
- July 1987
- DOI:
- Bibcode:
- 1987JaJAP..26L1156T
- Keywords:
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- High Temperature Superconductors;
- Mixed Oxides;
- Oxygen;
- Transition Temperature;
- Barium Oxides;
- Copper Oxides;
- Temperature Profiles;
- Yttrium Oxides;
- Solid-State Physics