SYNTHESIS OF Bi2Te3 NANOCOMPOSITES REINFORCED WITH MWCNTs

Abstract

A high purity single crystal Bismuth telluride ingot was synthesized by vertical directional solidification technique. As grown ingot was finely powdered by using mortar and pestle.It was then ball milled for 8hrs in order to reduced particle size further. MWCNTs was mixed with bismuth telluride powder in two different proportions. Two samples of MWCNTs reinforced bismuth telluride composites were prepared ,one contains 1.5% by weight CNTs and other contains 3% by weight CNTs. Both samples were ultrasonicated for 90 minutes for proper mixing of CNTs in bismuth telluride composites. After ultrasonication it was expected that CNTs were properly dispersed in bismuth telluride composites.