Critical currents of granular YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7- delta </sub> superconductors
A A Zhukov; D A Komarkov; G Karapetrov; S N Gordeev; R I Antonov; A A Zhukov; Dept. of Phys., Moscow State Univ., Russia; D A Komarkov; Dept. of Phys., Moscow State Univ., Russia; G Karapetrov; Dept. of Phys., Moscow State Univ., Russia; S N Gordeev; Dept. of Phys., Moscow State Univ., Russia; R I Antonov; Dept. of Phys., Moscow State Univ., Russia
Журнал:
Superconductor Science and Technology
Дата:
1992-06-01
Аннотация:
The H-T diagram describing the critical current behaviour of granular superconductors in a magnetic field is proposed. The process of trapping magnetic field by a ceramic sample and the influence of the trapped field on the transport critical current have been studied. The temperature and magnetic field dependences of intergrain and intragrain critical currents have been analysed.
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