Homogeneity studies of multifilamentary BSCCO tapes by three-axis Hall sensor magnetometry

A new generation of Hall sensor magnetometer for non-destructive studies of superconductor homogeneity is proposed and tested. The magnetometer allows us to measure the three-dimensional spatial dependence of all three compon ents of magnetic field produced by applied or induced currents in the condu ctor. This new technique is more sensitive to detect small obstacles in the current path than the old Hall sensor techniques measuring only the field component perpendicular to the flat surface of the conductor. Having presen ted the measurement system,the method is demonstrated by experiments on mul tifilamentary BSCCO tapes.