Effect of sintering time on Bi1.6Pb0.4Sr1.8Ba0.2Ca2Cu3O10+ compound quenched in air and liquid nitrogen

الملخص EN

High temperature superconductor with nominal composition Bi1.6Pb0.4Sr1.8Ba0.2Ca2 Cu3O10+ 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.