NON-CONTACT METHOD FOR MEASURING THE DEPENDENCE OF THE CRITICAL CURRENT OF A HIGH-TEMPERATURE SUPERCONDUCTOR TAPE ON THE MAGNITUDE AND ORIENTATION OF THE MAGNETIC FIELD

A method for non-contact measurement of the critical current Jc of a high-temperature superconductor (HTSC) tape is considered, using the effect of magnetic flux capture in a superconducting ring. It is shown that the application of a local magnetic field on a section of the tape makes it possible to determine the dependence of Jc on the magnitude of the magnetic field H and the angle α between the plane of the tape and the direction of the magnetic field. Measurements of Jc(H, α) carried out on an experimental setup using the proposed technique showed good agreement of the results with published data on the anisotropy of the critical currents of HTSC tapes.