Josephson Junction and DC SQUID of Y-Ba-Cu-O Thick Film at 77 K
Abstract
YBa2Cu3O7-x thick films were farbricated by the method of screen printing. Zero resistance temperature of 89 K and critical current density of 130 A/cm2 at 77 K of the films were obtained. The observation of ac Josephson effect at 77 K from weak link Junction of the thick film is reported. The successful dc SQUID operation at 77 K fabricated from the thick film is described. The observation of clear periodic patterns due to the macroscopic quantum interference effect assures promising application of this device at liquid nitrogen temperature.
- Publication:
-
Japanese Journal of Applied Physics
- Pub Date:
- July 1988
- DOI:
- 10.1143/JJAP.27.L1204
- Bibcode:
- 1988JaJAP..27L1204L
- Keywords:
-
- High Temperature Superconductors;
- Josephson Junctions;
- Mixed Oxides;
- Squid (Detectors);
- Thick Films;
- Yttrium Oxides;
- Barium Oxides;
- Copper Oxides;
- Current Density;
- Volt-Ampere Characteristics;
- Electronics and Electrical Engineering