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Química Nova

Print version ISSN 0100-4042


GIROTTO, Emerson M.  and  SANTOS, Ivair A.. DC electrical resistivity measurements in solids: how to proceed correctly. Quím. Nova [online]. 2002, vol.25, n.4, pp.639-647. ISSN 0100-4042.

This paper deals with the most common methods for determining the dc electrical resistivity in solid materials. A brief overview of the fundamental concepts related to the electrical resistivity on materials is introduced. Undoubtedly, the most common and useful procedure to determine the electrical resistivity (r) is the fourpoint probe method. Some crucial mistakes regarding the experimental procedure and the appropriated correction factors are found in the literature. Thus, the correction factor for the most common sample geometries were gathered and revised in order to provide an easy way to use and apply them.

Keywords : resistivity; conductivity; four-point probe method; correction factors.

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