Nondestructive Investigation of Position Dependent Ic Variations in Multi-Meter Coated Conductors

A coated conductor wire produced by the MOD-RABiTS process was nondestructively characterized forIcuniformity along its length. Regions of interest were identified by variations in theIc-nvalue relationship. These regions were investigated usingIc(B,angle) andIc(B||c) measurements. It was found that the conductor properties vary from isotropic to anisotropic over a length of a few centimeters. Additionally, the exponent of the power law fit to the field dependence is shown to vary between 0.84 and 0.67. The position dependence ofIcwas then measured at two field orientations,H||c andH||ab, along the conductor in a new two measuring stage system. This system allows rapid characterization of a long conductor while providing easily interpreted data on the source of variations.