Author/Authors :
Hermiz, Ghazala Y. University of Baghdad - College of Science - Dept of Physics, Iraq , Aljurani, Bushra A. University of Baghdad - College of Science - Dept of Physics, Iraq , Thabit, Hassan A. University of Baghdad - College of Science - Dep of Physics, Iraq
Abstract :
High temperature superconductor with nominal composition Bi1.6Pb0.4Sr1.8Ba0.2Ca2 Cu3O10+δ was prepared by solid state reaction method. Two sets of samples have been prepared .The first one was quenched in air; the second set was quenched in liquid nitrogen. X-ray diffraction analyses showed an orthorhombic structure with two phases, high –Tc phase (2223) and low-Tc phase (2212) in addition to that impure phase was found. It has been observed that quenched in air samples display a sharp superconducting transition and a higher-Tc phase than that of the quenched in liquid nitrogen samples
