Paramagnetic Effect in Superconductors. Part II. Quasi-Paramagnetism in Non-Circular Cylindrical Tin Specimens

抄録

Using circular cylindrical samples, we have shown in previous reports, that the minimum of current I₀ required for the appearance of the paramagnetic effect is composed of two terms I_g and γdH₀ and that I_g is independent of the sample size. In this paper, using the several kinds of non-circular cylindrical samples (rectangular, semi-circular, triangular, hollow circular, and three other forms which may show no paramagnetic effect), we have studied the same effect.
In the former four samples, the value of I_g has proved to be the same as in the case of circular cylinders. In the latter three samples (sandwich-type, cylinder and hollow cylinder with a longitudinal wedge-shaped slot) no paramagnetic effect has been found.