Weakly bound oxygen and superconductivity in YBa2Cu3O(x)
Abstract
The content and state of oxygen in the high-temperature metal oxide superconductor YBa2Cu3O(x) are investigated experimentally in the temperature range from 300 C to the melting point at partial oxygen pressures of 10-100,000 Pa. It is found that, in the ceramic, oxygen is represented by two forms: weakly bound and strongly bound. The amount of strongly bound oxygen is fixed at 6 g atom/mol and is not directly related to the superconducting properties of the ceramic. The amount of the weakly bound oxygen atoms intercalated in the basis plane 001, on the other hand, determines both the critical temperature and the diamagnetic response of the superconductor.
- Publication:
-
Fizika Nizkikh Temperatur
- Pub Date:
- January 1989
- Bibcode:
- 1989FizNT..15....8P
- Keywords:
-
- Chemical Bonds;
- Copper Oxides;
- High Temperature Superconductors;
- Melting Points;
- Oxygen Atoms;
- Barium Compounds;
- Critical Temperature;
- Diamagnetism;
- Yttrium Compounds;
- Solid-State Physics