Ferromagnetic nanoparticles as efficient bulk pinning centers in HTSC

11th European Conference on Applied Superconductivity

Kashurnikov, V.A.^1 ; Maksimova, A.N.^1 ; Rudnev, I.A.^1,2

National Research Nuclear University, Moscow, Russia^1

International Laboratory of High Magnetic Fields and Low Temperatures, Wroclaw, Poland^2

关键词: 2-D model;    Abrikosov vortices;    Ferromagnetic nanoparticles;    Magnetic nano-particles;    Magnetization curves;    Pinning center;    Reversible magnetization;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/2/022017/pdf
DOI  :  10.1088/1742-6596/507/2/022017

来源: IOP

【 摘 要 】

The self-consistent interaction of Abrikosov vortex with both point and extended ferromagnetic defects was taken into account in the 2D model of layered HTSC. Magnetization curves for HTSC with magnetic nanoparticles as bulk pinning centers were obtained by Monte-Carlo method. The nonlinearity of the interaction of the superconductor with ferromagnetic defects and irreversibility of initially reversible magnetization processes due to nonlinearity were demonstrated.