Angular dependence of the critical current density and the temperature scaling of the flux pinning force in YBCO thin film

摘要

In this paper, the critical current J(c)(Theta) have been investigated as a function of magnetic-field angle Theta. Theta is the angle between the c-axis and the applied magnetic field direction. This investigation concerned three temperature values (60 K, 78 K and 81 K). The normalized pinning force f(p) versus the normalized magnetic field h was also studied (f(p) = F-p / F-pmax and h = H / H-max). The F-p expression was determined based on the Kramer model.