Magnetic flux creep in Bi-based superconductors
β Scribed by J. Wang; K.N.R. Taylor; H.K. Liu; G.J. Russell; S.X. Dou
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 226 KB
- Volume
- 185-189
- Category
- Article
- ISSN
- 0921-4534
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π SIMILAR VOLUMES
The time decay of the magnetization was studied on Tl -Ba -Ca -Cu -0 and Bi ( Pb ) -Sr -Ca -Cu -0 superconductors. In the Tl -based compound, the results provide evidence for a non thermally activated flux motion at low temperature suggesting quantum tunneling of vortices. In the Bi-based compound a
The decay of the remanent magnetizations of crystalline (MIIc) and ceramic Bi2Sr2CalCu208 have been measured between 1 s and 2 Γ 104 s for temperatures between 4 K and 20 K. With increasing temperature the long-time relaxation M(t, T) becomes significantly non-logarithmic, which, following a suggest