Preparation and dielectric property of Ag-PVA nano-composite

被引：53

作者：

Feng, QQ

Dang, ZM ^{[1
]}

Li, N

Cao, XL

机构：

[1] Tsing Hua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Xian Jiaotong Univ, State Key Lab Elect Insulat Power Equipment, Xian 710049, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2003年 / 99卷 / 1-3期

关键词：

Coulomb blockade; nano-composite; preparation; dielectric properties;

D O I：

10.1016/S0921-5107(02)00564-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The property of nano-powder was reviewed with emphasis on its Coulomb blockade effects. Ag-colloid of different concentration with different particle size was prepared. Ag-PVA composite colloid was obtained by mixing Ag-colloid with PVA solution. TEM showed that Ag particles (< 100 nm) were uniformly dispersed in PVA. The resistivity at room and low temperatures and breakdown field strength of samples were investigated. The results show that dielectric properties of composite change while Ag content or distributing state changes. The composite with 20-30 nm Ag particles has a higher resistivity and breakdown field than its matrix. In a word, Coulomb blockade effects of metal powders could improve resistivity and breakdown field of its matrix. (C) 2002 Published by Elsevier Science B.V.

引用

页码：325 / 328

页数：4

共 11 条

[1] DEGENERATE 4-WAVE MIXING IN COLLOIDAL GOLD AS A FUNCTION OF PARTICLE-SIZE [J].