ANISOTROPIC PERCOLATION IN AN EPOXY-GRAPHITE DISC COMPOSITE

被引：38

作者：

CELZARD, A ^{[1
]}

FURDIN, G ^{[1
]}

MARECHE, JF ^{[1
]}

MCRAE, E ^{[1
]}

DUFORT, M ^{[1
]}

DELEUZE, C ^{[1
]}

机构：

[1] CTR ETUD RIPAULT,F-37260 MONTS,FRANCE

来源：

SOLID STATE COMMUNICATIONS | 1994年 / 92卷 / 05期

关键词：

D O I：

10.1016/0038-1098(94)90512-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Composites comprising phi = 0.5 to 9 volume % of micron-sized graphite platelets with diameter to thickness ratios of the order of 100 have been made and deposited in the farm of partially oriented films. Room temperature electrical conductivity measurements both parallel and perpendicular to the plane of deposition reveal a low threshold of phi* = 0.8 +/- 0.1 vol. %. The conductivity critical exponents are anisotropic with values around 7 and 10. While isotropic at the threshold, the composite system attains an anisotropy near 10(5) at the highest concentration limit.

引用

页码：377 / 383

页数：7

共 23 条

[1] TUNNELING AND NONUNIVERSAL CONDUCTIVITY IN COMPOSITE-MATERIALS [J].