TEMPERATURE DEPENDENCE (4K TO 300K) OF THE ELECTRICAL RESISTIVITY OF METHANE GROWN CARBON FIBERS.

John A. Woollam, Hao Chang, Suraiya Nafis, David J. Sellymer

Research output: Contribution to journalArticle

Abstract

Experimental measurements of the electrical resistivity vs temperature of methane vapor grown carbon fibers are presented. The fibers are heat treated from 1100 degree C (as-grown) to 3000 degree C. Data are fit to a standard two band model, which yields values for boundary scattering limited electron mobility, inplane mean free path, energy band overlap, and total carrier density. The data are also fit to an ellipsoidal band model, where data fits yield effective masses, band overlap, Fermi velocity, phonon contributions to scattering, and ionized impurity scattering rates.

Original languageEnglish (US)
Pages (from-to)9-18
Number of pages10
JournalApplied physics communications
Volume7
Issue number1-2
Publication statusPublished - Mar 1 1987

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ASJC Scopus subject areas

  • Engineering(all)

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