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Galvanomagnetic properties of bromine-intercalated carbon fibers

✍ Scribed by André Marchand; Rakesh Mathur

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
899 KB
Volume
27
Category
Article
ISSN
0008-6223

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✦ Synopsis

Abstmc&Three

different types of carbon fibers were submitted to bromine intercalation and subsequent desorptions. The changes of the electrical resistivity. Hall effect, and transverse magnetoresistance were measured at 300 and at 77 K. The results are interpreted in terms of a classial two-carriers model and the carriers concentrations and mobilities are determined from the experimental values of the electronic properties. A general relationship between the concentrations and the mobilities is found, not only in the case of the fibers, but also for boron-doped pyrolytic carbons as well as for graphite single crystals and pyrographites. A charge transfer coefficient of approximately 0.3 electronic charge per Br atom can be determined

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