Microstructure and Negative Magnetoresistance in Pitch-derived Carbon-fibers

Nysten, Bernard;Issi, Jean-Paul;Barton, R.;Boyington, D. R.;Lavin, Jerry G.
(1991) Journal of Physics D: Applied Physics — Vol. 24, n° 5, p. 714-718 (1991)

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Authors
  • Nysten, Bernardorcid-logoUCLouvain
    Author
  • Issi, Jean-PaulUCLouvain
    Author
  • Barton, R.Du Pont, Wilmington, DE
    Author
  • Boyington, D. R.Du Pont, Wilmington, DE
    Author
  • Lavin, Jerry G.Du Pont, Wilmington, DE
    Author
Abstract
The transverse magnetoresistance of various pitch-derived carbon fibres has been measured at 4.2 and 77 K as a function of magnetic field up to 1.2 T. The magnetoresistance was found to be negative for all the fibres studied. The data have been interpreted using the two-dimensional (2D) weak localization theory and have been related to the structural parameters determined by x-ray diffraction. The results are also compared with those obtained on other pitch-based fibres and on pregraphitic carbons. They show that the negative magnetoresistance is related to the microstructure of the material and thus could be used as a tool to characterize the defect structure of carbon fibres.
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Nysten, B., Issi, J.-P., Barton, R., Boyington, D. R., & Lavin, J. G. (1991). Microstructure and Negative Magnetoresistance in Pitch-derived Carbon-fibers. Journal of Physics D: Applied Physics, 24(5), 714-718. https://doi.org/10.1088/0022-3727/24/5/013 (Original work published 1991)