The Effect of mechanical alloying on Electrical properties of BaTiO3 Nano Crystals

Abstract

In this paper, electrical properties of BaTiO3 nano crystals have been studied, Barium Titanate Nano Crystals are made by mechanical alloying method in a ball mill of SPEX 8000. In order to find Curie temperature, dielectric constant variation via temperature and hysteresis loops are investigated. Our results show that, there is a relationship between the time of milling and the curie temperature .this means with increasing milling time, grain size will decrease, consequently the curie temperature will decrease. In addition, with increasing temperature up to the Curie temperature, the hysteresis loop of samples decrease and at the Curie temperature the hysteresis loop changes to a straight line.