抄録
Superconducting properties in an artificially designed pin structure composed of Nb/NbTi multilayers in a NbTi superconducting wire are analyzed theoretically with the experimental results and it is found an aspect ratio of plate-like Nb artificial pins in the pin structure gives effect to the critical current density in the wire. This is useful parameter for obtaining more high critical current densities, since both the elementary pinning force and the pin density can be changed without reducing the pinning efficiency in the pin structure.
