The field and temperature dependent critical current density, jc(B, T), and magnetization, M(B, T), of melt processed Bi2Sr2CaCu208 samples have been examined in fields up to 8 T. In addition, published data on an epitaxially grown YBa2Cu307 film have been analysed. Both sources of information show
Critical current models and magnetic shielding of high temperature superconductors
β Scribed by Jun Wang; Michael Sayer
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 735 KB
- Volume
- 212
- Category
- Article
- ISSN
- 0921-4534
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π SIMILAR VOLUMES
An extended critical state model which includes the effects of bulk critical current density, equilibrium magnetization and surface barrier is developed for the magnetization of superconductors. The equilibrium magnetization and surface barrier are modelled by an applied field dependent surface supe
We have measured the magnetic flux in YBa2Cu30F superconductors when transport currents were allowed to flow in zero external field at 77 K. The magnetic flux was trapped when the transport current exceeded a value /cs, which was smaller than the transport critical current let; typically, 0.4/ct. We