2018/09/20 by O. A. Hernández-Flores, Hernández-Flores, O. A., Jaime Gutiérrez-Gutiérrez +3
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic Properties of Alloys #Physics of Superconductivity and Magnetism #Superconducting Materials and Applications #Superconductivity (cond-mat.supr-con) #Superconductivity in MgB2 and Alloys
paper · pdf · doi:10.48550/arxiv.1809.07900
openalex publication_date 2018/09/20 · openalex created_date 2022/08/03 · openalex updated_date 2026/07/28
The goal of this research is the study of the thermomagnetic consequences in\nisotropic type-II superconductors, subjected to multi-component magnetic fields\n\Ha = Hay\y+Haz\z, because the instability field\n\Hfi is closely related with a flux jump occurrence. At the\ncritical-state model framework, once the Lorentz \FL and pinning\nforces \FP are at equilibrium, the current density reaches a\ncritical value jc and a stationary magnetic induction distribution\n\B is established. The equilibrium of forces is analytically solved\nconsidering that the pinning force is mainly affected by temperature\nincrements; the energy dissipation is incorporated throughout the heat equation\nat the adiabatic regime. The theory is able to obtain the instability field\naccording to the thermal bath and applied field values; moreover, it provides\nof instability field branches comprising both partial and full penetrates\nstates. With this information is possible to construct a field-temperature map.\nThe results are compared with already published experimental data, finding a\nqualitatively agreement between them. This theoretical study works with a first\norder perturbation, then the perturbation presents a periodical behavior along\nthe thickness direction; considering this environment it is constructed the\nmagnetic induction distributions which resemble flexible cantilever structures.\n