Flux motion, proximity effect and critical currents in Y<sub>1</sub>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>/silver composites
J Jung; M A -K Mohamed; J P Franck; J Jung; Dept. of Phys., Alberta Univ., Alta., Canada; M A -K Mohamed; Dept. of Phys., Alberta Univ., Alta., Canada; J P Franck; Dept. of Phys., Alberta Univ., Alta., Canada
Журнал:
Superconductor Science and Technology
Дата:
1991-01-01
Аннотация:
The authors studied the magnetic and transport properties of pure Y<sub>1</sub>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7- delta </sub> and Y<sub>1</sub>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7- delta </sub>/intergrain Ag (10 and 30 wt.%) composites. The results show that the enhancement of the intergrain 'transport' critical current density in the Y<sub>1</sub>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7- delta </sub>/Ag (10 wt.%) composite is caused by the SNS proximity junctions built up by intergrain silver and not by increased intergrain flux pinning.
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