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Pyrolized graphite samples are produced by pyroly tic deposition on substrates at temperatures of 1700 to 2500 deg C. A review is presented of the basal plane and c-direcion conductivities, electrical anisotropy, Hall coefficient, and magnetoresistance of these samples, as functions of the deposition temperature and the ambient temperature. The data are analyzed in terms of carrier concentrations and mobilities, and in ternms of other conduction mechanisms for graphitic systems. X-ray-diffraction analyses of the samples are also reported. (T.F.H.)
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Claude Klein (1962) studied this question.
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