scholarly journals Exact solution for the critical state in thin superconductor strips with field-dependent or anisotropic pinning

2000 ◽  
Vol 62 (10) ◽  
pp. 6812-6819 ◽  
Author(s):  
Grigorii P. Mikitik ◽  
Ernst Helmut Brandt
Keyword(s):  
Exact Solution ◽  
Critical State ◽  
Field Dependent ◽  
Thin Superconductor

NUMERICAL CALCULATION OF THE CRITICAL STATE IN SUPERCONDUCTING TAPES ABOVE THE FULL PENETRATION FIELD

2003 ◽  
Vol 17 (04n06) ◽  
pp. 916-921 ◽  
Author(s):  
D. ZOLA ◽  
M. POLICHETTI ◽  
C. SENATORE ◽  
S. PACE ◽  
F. GÖMÖRY
Keyword(s):  
Magnetic Field ◽  
Finite Element ◽  
Critical State ◽  
Superconducting Tapes ◽  
Full Penetration ◽  
Field Dependent ◽  
Element Computation ◽  
The Magnetic Field ◽  
Finite Element Computation ◽  
Multifilamentary Tapes

The critical state with a magnetic field dependent critical current density jc(B) has been calculated numerically in superconducting tapes, for magnetic fields above the full penetration field. By using a finite element computation, the magnetic field profiles and the current distribution in the tapes have been calculated both for monofilamentary and for multifilamentary tapes with several aspect ratio of the filaments. Particular attention has been paid to the investigation of the effects of the sample geometry and of the jc(B) dependence on the field profiles and on the hysteresis loop.

scholarly journals О магнитометрическом определении концентрации радиационных дефектов в сверхпроводящей пленке GdBa-=SUB=-2-=/SUB=-Cu-=SUB=-3-=/SUB=-O-=SUB=-7-x-=/SUB=-

2021 ◽  
Vol 63 (6) ◽  
pp. 712
Author(s):  
А.И. Подливаев ◽  
И.А. Руднев
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
External Magnetic Field ◽  
Critical State ◽  
Software Package ◽  
Radiation Defects ◽  
Superconducting Properties ◽  
Helium Ions ◽  
Model Calculations ◽  
Thin Superconductor

An express magnetometric technique is proposed, which makes it possible to determine the inhomogeneity of the change in the superconducting properties of a thin superconductor layer due to radiation exposure. A numerical simulation of this technique is carried out using the example of a superconducting GdBa2Cu3O7-x layer irradiated with hydrogen and helium ions. The profile of the concentration of radiation defects was calculated using the SRIM software package. The calculation of the density distribution of superconducting currents induced by an external magnetic field was carried out within the framework of the critical state model. Model calculations have shown the effectiveness of the proposed method.

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