A method for measuring homogeneity of electric current conducting materials

摘要

A method for measuring the homogeneity of electric current conducting materials, which consists in measurements of four-point resistances, characterised in that at least six contacts are arbitrarily arranged on the edge of a flat sample of the examined material of arbitrary shape and at least six different four-point resistances are measured, whereas the degree of homogeneity of the sample is determined with the use of the theory of current distribution in a two-dimensional homogenous sample with an isolated hole.