|Title of the article||
MAGNETIC AND TEMPERATURE DEPENDENCIES OF MAGNETIZATION HARMONICS OF A THIN SUPERCONDUCTING DISK IN THE MODEL OF CRITICAL STATE WITH CRITICAL CURRENT DENSITY, INVERSELY PROPORTIONAL TO FIELD STENGTH SQUARED
Kuz'michev Nikolay Dmitrievich, Doctor physical and mathematical sciences, professor, head of sub-department of general scientific disciplines, Ogarev Mordovia State University (68 Bolshevistskaya street, Penza, Russia), email@example.com
Background. Research of the magnetic properties of critical state of the hard superconductors of the II type, in particular high-temperature superconductors (HTSC) is important because of their practical application in electro- and radio measuring equipment. For this purpose it is necessary to know a response of various structures and HTSC geometrical forms to ac and dc magnetic fields. The purpose of this work is mathematical modeling of magnetization harmonics of a hard superconductor of the II type in the form of a thin disk in apprroximation of field shielding in the sam-ple center within the model of critical state with dependence of critical density of current on intensity of the magnetic field of Jc ~ 1/H2 type. The specified depend-ence was used to describe the critical state of superconductors at the large density of Abrikosov vortex and to describe the magnetic properties of ceramic HTSC.
high-temperature superconductor, hard superconductor of II type, critical state, thin disk, critical current density, hysteretic loop of magnetization, harmonics magnetization.
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