Method for critical current angular dependencies analysis of superconducting tapes

Abstract

Various applications of superconducting materials require accounting of anisotropy of the current-carrying capacity relative to magnetic field direction - Ic(θ). However, today there is no sufficiently comprehensive model that takes into account the anisotropy, therefore the angular dependences are usually not analysed, but only described using various mathematical formulas. As a result, the fitting parameters have no physical meaning and it is difficult to correlate the picture with the features of the microstructure. In this paper, we propose a method for analysing the critical current angular dependences based on the anisotropic pinning model. The applicability of this model for conventional superconducting Nb-Ti tapes with one peak in the Ic (θ) dependence is shown. The possibility of extending this model to analyse the angular dependences of HTS materials is discussed.

arXiv commentInternational Conference PhysicA.SPb/2021

References in corpus (5)

• Angular dependent vortex pinning mechanisms in YBCO coated conductors and thin films
• A parameter-free method to extract the superconductor's $J_c(B,\theta )$ field-dependence from in-field current-voltage characteristics of HTS tapes
• The interpretation of the field angle dependence of the critical current in defect-engineered superconductors
• The onset of dissipation in high-temperature superconductors: magnetic hysteresis and field dependence
• Solenoid from experimental HTS tape for magnetic refrigeration

Cited by in corpus (1)

• Critical current anisotropy of practical superconductors: analysis methods and application cases