EFFECT OF FILAMENT ARCHITECTURE ON MAGNETIC-FLUX DISTRIBUTIONS IN MULTIFILAMENTARY (BI,PB)(2)SR2CA2CU3OX AG COMPOSITES/

Multifilamentary (Bi, Pb)(2)Sr2Ca2Cu3Ox/Ag composites have been studie d by a nondestructive magneto-optical imaging technique in order to de termine the effect of filament architecture on the local magnetic flux distribution. The images reveal the homogeneity of the flux distribut ion in the upper layer filaments under magnetizing and demagnetizing c onditions, and the alignment and morphology of these filaments in tape s with nine different composite structures. Certain types of filament arrangements led to homogeneous flux distributions, while other types caused localized inhomogeneities in the flux distribution. Nonuniform filament thickness also resulted in a highly inhomogeneous flux distri bution. These results are useful in selecting optimal composite struct ures for power applications.