Asymmetry of magnetization curves of textured BSCCO

TL;DR

This study investigates the asymmetric magnetization curves of textured BSCCO superconductors, analyzing how pinning influences their magnetic response at various temperatures and field orientations.

Contribution

It introduces a modified Valkov-Khrustalev model incorporating pinning to accurately describe asymmetric M(H) curves in textured BSCCO.

Findings

Pinning parameter effectively explains asymmetry in magnetization curves.

Critical current and pinning strength vary with temperature and magnetic field orientation.

Model successfully fits experimental data for different field directions.

Abstract

The dependence of magnetization on magnetic field M(H) was measured for textured BSCCO samples for H || c, H || ab at different temperatures. Inclusion of the pinning parameter in the Valkov-Khrustalev model [V.V. Valkov, B.P. Khrustalev, JETP 80 (1995) 680] allowed to describe successfully the asymmetric M(H) dependencies. The temperature and magnetic field dependencies of critical current and pinning parameter for H || c and H || ab were estimated.