Structural and electrical properties of composites of polymer-iron carbide nanoparticles embedded in carbon

被引：21

作者：

Shekhar, S. ^{[1
]}

Prasad, V. ^{[1
]}

Subramanyam, Sn. ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2006年 / 133卷 / 1-3期

关键词：

polymer composites; pyrolysis; transport properties; nanostructures; transmission electron microscopy; INDUCED TUNNELING CONDUCTION; PERCOLATION; BEHAVIOR; MATRIX;

D O I：

10.1016/j.mseb.2006.06.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electrical transport properties of composites of polymer and iron carbide nanoparticles embedded in carbon have been studied from 300 to 1.3 K. The composites show percolative type behavior with a low threshold value. The XRD shows amorphous nature of the composite. The temperature dependence of conductivity follows two different Efros-Shkiovskii variable range hopping mechanisms (sigma = sigma(0) exp[-(T-ES/T)(1/2)]) with different pre-exponential factors (rho(0)) and different TES values in the range of 300-6 K. Thermogravimetric analysis shows that the thermal stability of composites does not depend on filler content to a large extent. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：108 / 112

页数：5

共 22 条

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