Detection Method for the Normal-to-Superconducting Phase Transition of 10 μ Spheres

Abstract
In order to study the superheating and supercooling in type I superconducting spheres, with diameters of the order of 10 μ, a low noise (10−11 V) mutual inductance system has been developed capable of detecting the phase transition of less than 10−9 cc of a type I superconductor.