The giant short-time decay of persistent currents in Y1Ba2Cu3O7−δ at 77K
✍ Scribed by L. Gao; Y.Y. Xue; P.H. Hor; C.W. Chu
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 453 KB
- Volume
- 177
- Category
- Article
- ISSN
- 0921-4534
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Trapped flux, persistent current, diamagnetic shielding and Meissner effect in a ring and a disk of YIBa2Cu307 have been studied by the measurement of the distribution of magnetic field across the sample at 77K in applied magnetic field up to 1000 G. It was observed that penetration of magnetic flux
## Measurements of the electrical resistivity, p, and of the critical current, /,, of polycrystalline Y,Ba,Cu,O,\_, samples before and after being melted superficially are presented. The melting was done by heating the samples at 1050°C during a few minutes, and then annealing at 900°C in flowing