ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Carbonaceous films with metallic luster have been prepared by pyrolytic chemical vapor deposition on the inside surface of a quartz tube at 1000 °C using hydrocarbon including oxygen atoms such as phenols as raw material. The x-ray diffraction, electrical conductivity, thermoelectric power, and electron-spin-resonance (ESR) characteristics of the films heat treated to between 1000 and 2800 °C have been examined. These results indicate complete graphitization of the films by the heat treatment. The three-dimensional ordering of crystallites in the films and increase in the electrical conductivity have proceeded in the range 2000–2200 °C. The concomitant fall in the thermoelectric power in the same range suggests the contribution of two carriers (holes and electrons). The increasing rate of g shift has been also enhanced in this range. The unusual broadening in the ESR linewidth has occurred around the temperature where a localized center appears and seems to be caused by scattering of mobile charge carriers at the localized centers.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.347621
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