$I_rm c$Anisotropy of Flat Composite Superconductors

Flattened composite superconductors have an advantage of increased fill factor and improved turn's stability in the magnet winding. Therefore, flat multifilament
$ NbTi$
,
$ Nb_3 Sn$
, Bi-2223 and
$ MgB_2$
superconductors were measured in the external magnetic field of variable orientations. Critical current anisotropy dependences of these composite tapes are compared and discussed.