Effect of Sintering Temperatures on the Physical Properties of Bi-2223 System Prepared by Co-Precipitation Method

Abstract

The challenge in this research is the producing of nanoparticle superconductor compound. The benefit of nanoparticle is making the improving of the superconductor compound. The Bi2Sr2Ca2Cu3O10 (Bi-2223) compound prepared by Co-precipitation method at different sintering temperatures (600, 700, 850 °C) (20 hrs) with pH value (7). The electric resistivity of samples measured under liquid helium closed cycle cryogenic system. The TEM estimation of sample prepared by Co-precipitation recognized the range of particles size is about (22 - 48nm) at sintering temperature (600 °C). The range of nanoparticles size is in about (65-112 nm) at sintering temperature (700 °C) and (80-124) nm at sintering temperatures (850°C). The critical temperature of sample at sintering temperatures (700, 850 °C) was about (109 ,112) K respectively The crystal structure confirmed by using X-ray diffraction, these peaks were found to be well indexed by the tetragonal phase of Bi-2223. It was defined the successful of this method is a function to presence of full properties for superconductor compound like Bi-2223 system. .