Fig. 2: In-field resistivity measurements and the magnetic phase diagram for the K-doped Ba122 thin film. | NPG Asia Materials

Fig. 2: In-field resistivity measurements and the magnetic phase diagram for the K-doped Ba122 thin film.

From: Approaching the ultimate superconducting properties of (Ba,K)Fe2As2 by naturally formed low-angle grain boundary networks

Fig. 2

a Resistivity curves for H parallel to the crystallographic c-axis and (b) H||ab-plane. The field increment was 2 T from 2 to 16 T. Below 2 T, measurements were conducted at 0, 0.5, 1, and 2 T. c Both Hc2 and Hirr are plotted as a function of temperature. The solid symbols represent Hc2, and the open symbols show Hirr. For H||c, the slope of Hirr changes by approximately 2 T, as indicated by the arrow. d Logarithmic presentation of Hirr vs. 1–T/Tirr, where Tirr is the irreversibility temperature at the self-field. The slope changes at 2 T, corresponding to the matching field.

Back to article page