EFFECT OF OXYGEN ON THE ELECTROPHYSICAL PROPERTIES OF SOME CARBON ALLOTROPES (GRAPHITE AND C-60 FULLERENE)

Authors
MASTEROV VF PRIKHODKO AV NEMCHUK NI SHAKLANOV AA
Citation
Vf. Masterov et al., EFFECT OF OXYGEN ON THE ELECTROPHYSICAL PROPERTIES OF SOME CARBON ALLOTROPES (GRAPHITE AND C-60 FULLERENE), Physics of the solid state, 39(9), 1997, pp. 1522-1524
Citations number
6
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physics of the solid state → ACNP
ISSN journal
10637834
Volume
39
Issue
9
Year of publication
1997
Pages
1522 - 1524
Database
ISI
SICI code
1063-7834(1997)39:9<1522:EOOOTE>2.0.ZU;2-S
Abstract
The electrophysical properties of powder samples of graphite and C-60 fullerene have been studied in vacuum, oxygen ambient, and air. Room-t emperature conduction of the samples has a percolative character. An i ncrease of temperature brings about an increase of sample conductivity caused by oxygen desorption from the bulk, A peak-shaped feature not observed ed before has been found in the temperature behavior of the r esistance of finely dispersed C-60 and graphite powder samples in the T = 310-340 K interval. Oxygen atoms were found to be involved in char ge transport in powder samples of graphite and C-60 fullerene through their electrical activity on the surface of grains differing in size. (C) 1997 American Institute of Physics.