Abstract

The dc Josephson characteristics in bridge type Josephson junctions using screen printed YBa 2 Cu 3 Oy superconducting films were presented. Relations between the grain size and weak linked total cross sectional area in bridge junction were also presented. Fabrication techniques using granularly junction for Josephson device applications were proposed. A zero resistance temperature of the sample was observed at 81 K. Hard coupling YBa 2 Cu 3 Oy film and Y 2 BaCuOy substrate was observed by scanning electron microscopy. The current-voltage Josephson characteristics at different operating temperatures, different sintering temperatures and different bridge widths were measured. The critical current dependence of the sintering temperature and the total cross sectional area linked were expected

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