Intragrain critical current densities (Jc) are usually inferred from magnetization measurements using Bean's critical state model. Using this model results are presented for the case of Jc decaying exponentially with field and explanations are given for the observed changes in the shape of the magne
โฆ LIBER โฆ
Critical currents and magnetic properties of Bi- and Tl-based new high Tc superconductors
โ Scribed by K. Togano; H. Kumakura; D.R. Dietderich
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 394 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0011-2275
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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