Digitale Medien
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
66 (1989), S. 4284-4287
ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
The low-frequency excess electrical noise has been measured on carbon fibers with a wide range of crystalline perfection and corresponding electrical and mechanical properties. Fibers include those prepared from ex-PAN and ex-pitch polymers, and a catalytic-chemical vapor deposited filament. The extensional (Young's) moduli of these fibers varied from about 220 to 890 GPa (35–130 Msi), while the electrical resistivities varied from about 19 to 1 μΩ m. The low-frequency electrical noise of each fiber was found to be proportional to I2 and to vary as 1/f α, where f is the frequency and α is about 1.15. The most striking feature of the results was the strong dependence of the normalized noise power on the degree of crystalline perfection.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.343972
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