Defining regions of normal and anomalous skill effect of sintered Bi-basedsuperconductors by the SRPM method

An attempt to develop a method to simultaneously estimate both the resistiv ity rho and the magnetic penetration depth lambda by vectorially measuring the difference in the impedance between two circular solenoid coils, one wi th and the other without a cylindrical superconductor, has been made. It wa s ascertained that the legions of normal and anomalous skin effect can be d efined from the frequency dependence of the difference in the impedance bet ween the two coils. The mean free path of electrons iota is evaluated by ap plying the frequency dependence of the difference in the impedance of the c oils to the anomalous skin effect region. The values of rho, lambda and iot a of Bi-based sintered bulks with different J(c) were evaluated at liquid N -2 temperature.