Temperature dependence of conductivity in polyacrylonitrile-based carbon fibrils: heterogeneous model

Authors
Misurkin, IA Titov, SV Dejev, MM Zhuravleva, TS
Citation
Ia. Misurkin et al., Temperature dependence of conductivity in polyacrylonitrile-based carbon fibrils: heterogeneous model, MATER CH PH, 64(1), 2000, pp. 37-40
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS CHEMISTRY AND PHYSICS
ISSN journal
02540584 → ACNP
Volume
64
Issue
1
Year of publication
2000
Pages
37 - 40
Database
ISI
SICI code
0254-0584(20000331)64:1<37:TDOCIP>2.0.ZU;2-Q
Abstract
An anomalous temperature dependence of carbon fibrils' electric conductivit y in the range of 11-320 K is considered. The fibrils are prepared from pol yacrylonitrile by heat-treatment at 1400 degrees C. Our conjecture is that in these carbon fibrils different phases coexist. A heterogeneous model is developed and a good fit to the experimental temperature dependence of the conductivity of our fibrils is obtained. (C) 2000 Published by Elsevier Sci ence S.A. All rights reserved.