The Magnetization Processes in Layered High-Temperature Superconductors: The Effect of Anisotropy

The magnetization of layered high-temperature superconductors (HTSCs) has been studied by using the Monte Carlo method. Typical parameters of promising HTSCs such as BSCCO, MgB
₂
, and iron-based superconductors have been used for simulations, and the magnetization reversal loops were obtained. Anisotropy dependence of magnetic properties was analyzed. The ferromagnetic nanorods of arbitrary radius and constant magnetization were considered as pinning centers, and the pinning properties of extended ferromagnetic defects were analyzed. The analytic solution for the interaction of the vortex line and the ferromagnetic nanorod was obtained in the Lawrence–Doniach model. The simulations were done for both ferromagnetic and nonmagnetic extended defects.