The Bean model of the critical state in a magnetically shielded superconductor filament
arXiv:0812.1326 · doi:10.1088/1742-6596/43/1/142
Abstract
We study the magnetization of a cylindrical type-II superconductor filament covered by a coaxial soft-magnet sheath and exposed to an applied transverse magnetic field. Examining penetration of magnetic flux into the superconductor core of the filament on the basis of the Bean model of the critical state, we find that the presence of a non-hysteretic magnetic sheath can strongly enhance the field of full penetration of magnetic flux. The average magnetization of the superconductor/magnet heterostructure under consideration and hysteresis AC losses in the core of the filament are calculated as well.
arXiv comment4 pages, 3 figures; Proceedings of the 7th European Conference on Applied Superconductivity, Vienna, Austria, September 11-15, 2005
References in corpus (10)
- High transport critical current density above 30 K in pure Fe-clad MgB2 tape
- Overcritical states of a superconductor strip in a magnetic environment
- Improvement of critical current in MgB2/Fe wires by a ferromagnetic sheath
- Large Predicted Self-Field Critical Current Enhancements In Superconducting Strips Using Magnetic Screens
- Overcritical state in superconducting round wires sheathed by iron
- Current profiles and AC losses of a superconducting strip with elliptic cross-section in perpendicular magnetic field
- Entry of magnetic flux into a magnetically shielded type-II superconductor filament
- Virgin magnetization of a magnetically shielded superconductor wire: theory and experiment
- Direct visualization of iron sheath shielding effect in MgB_2 superconducting wires
- The Bean-Livingston barrier at a superconductor/magnet interface