Improved Stabilized Superconductors

Abstract
A new theory of the stable transition of a superconductor between normal and superconducting states is reviewed and data supporting this theory are presented. Data on copper-clad Nb-40% Ti are presented, and the slope for the variation of the critical current with wire diameter is found to be 1.5 for wire diameters between 0.005 and 0.05 cm. For copper-clad samples of this material, voltage-current data agree remarkably well with the new theory of stabilization. The importance of the superconducting transitional region is emphasized.

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