The problem of low temperature high density charge transport in disk shaped sample (Corbino geometry) has been investigated experimentally and analytically for polycrystalline aluminum having residual resistance ratio of 104. The values of magnetoresistance and self magnetic field stimulated by Hall drift in an external magnetic field up to 8 T has been estimated for exciting current of the order 103 A flowing through the disk samples. The analysis of observed data has been done on the base of equations for connection of current density with electric and magnetic field, the relaxation processes having been taken into account. Definite correlations between experiment and theory for disk shaped sample being inductance were established. These are: magnetoresistance, self magnetic field, its distribution and energy, characteristic transition time. Some possible variants of application o f studied phenomena for energy storage and transmission, control systems of cryogenic electric circuits are proposed with account of characteristic inductive and resistive properties of sample organized in such manner.

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In the present paper the results of studies of the deviations from Matthiassen's rule (DMRs) in single-crystal AI-Y alloys in magnetic fields up to 8 Tare represented. The results obtained bear wimess to the anisompic behaviour of the mechanisms of conduction elemon scattering from phonons and impurity atoms. In the analysis of experimental data. a correlation was revealed between the behaviour of the temperature dependences of the DMRs and the direction of the magnetic field relative to the crystallographic orientation of the specimen. and an explanation of the negative value of the DMR observed in the experiment is given.

Charge transport in a conducting medium with a magnetically stimulated inhomogeneity of kinetic coefficients along the direction of transport is investigated both experimentally and analytically. Measurements were made on samples in the form of high-purity polycrystalline aluminum plates whose conductivity inhomogeneity was simulated by the technique of curving of current lines so that the local normal component of the applied magnetic field varies according to an exponential or quadratic law. The relations describing the tensor connection between the electric field and charge flux density are used to calculate spatial dependence of the potential. The sign reversal of the electric field is described as the result of competition between the potential contributions from the current along the transverse magnetic field gradient and the Hall current at right angles to it.