Synthesis of superconducting films of the Y-Ba-Cu-O system by a screen printing method
Abstract
A screen printing method has been used to deposit superconducting films of Y-Ba-Cu-O materials on Al2O3 substrates. The electrical resistivity, microstructure, and adhesion of these films are highly sensitive to the post-printing heat treatment. Films heat treated at 950 °C and below are poorly adherent, whereas those annealed above 1000 °C undergo phase separation to Y2Cu2O5 and BaCuO2 and also react with the substrate. Nearly single phase, highly adherent, and smooth films showing a zero resistance state at 79 K have been synthesized by optimizing the annealing conditions.
- Publication:
-
Applied Physics Letters
- Pub Date:
- October 1987
- DOI:
- Bibcode:
- 1987ApPhL..51.1277B
- Keywords:
-
- Aluminum Oxides;
- Electrical Resistivity;
- Heat Treatment;
- High Temperature Superconductors;
- Superconducting Films;
- Superconductivity;
- Crystal Structure;
- High Temperature;
- Low Temperature;
- Phase Separation (Materials);
- Temperature Dependence;
- Solid-State Physics