The flux pinning behaviors for the heavy ion irradiated Er123 films are investigated based on the detailed Jc(B,T,θ) properties. The double peaks of Fp curves for B // c appear in case of the matching field of 0.3 T along c-axis and 1.7 T tilted from c-axis. In addition, the peaks on Jc (θ) at θ = 0° (B // c) , which originate from the columnar defects, decrease with increasing magnetic field but increase again near the irreversibility field.We found that the cooperation model of the c-axis correlated and random pinning centers can describe the observed double peak behavior of Fp(B) and the angular dependence of Jc related to the correlated pinning.
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials