This paper describes the magnetization of type-11 superconductors in the critical state, where the critical current density, J,, has a field dependence of the form J,( 6) = &A 1 + BIB,)". Explicit formulae are derived for the various branches of the complete high-field hysteresis loop. The geometry
Models of magnetic hysteresis in type II superconductors
β Scribed by H. Inhaber
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 898 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0011-2275
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π SIMILAR VOLUMES
The theoretical approach is carried out with the combined thermal and magnetic equations which are based on the critical state model for non-ideal type-II superconductors and include controllable physical parameters. Also, the behaviour of flux jumps is studied on Nb-Ti-Zr ternary alloy wires in the
There is a strong analogy between mechanical structural elements and magnetic circuit components which can be extended to include hysteretic energy losses associated with yielding in mechanical systems and saturation in magnetic components. Procedures for developing finite state models of hysteretic
THE critical current lc of a type II superconductor, taken from a short sample measurement, is not a well defined function of the magnetic field H. Sometimes le(H) depends on the way current and field are raised. This means there is an ambiguity of Ie which can be explained by circulating currents
The appropriate magnetic and thermal diffusion equations for magnetization of a "hard" type II superconductor have been solved numerically using a digital computer, and show the initiation of flux jumps at applied field strengths in agreement with experimentally observed magnitudes.