Effect of Silver and copper partial substitution on the structural and electrical properties of Bi2Ba2Ca2Cu3O10+δ superconducting


Laheeb A. Mohammed, Haider M.J. Haider, Haider S. Hussein‡†, Kareem A. Jasim and Auday H. Shaban‡‡


Department of physics/ College of Education For Pure Science Ibn AlHaitham University of Baghdad Iraq.

General Directorate of Karbala Education, Iraq

‡†University of Kufa, Faculty of Education for Girls, Physics Department, Iraq

‡‡ Department of physics, College of science, University of Baghdad Iraq

Corresponding Author Email: [email protected]

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In our research, the compound Bi2-x (Ag + Cu)xBa2Ca2Cu3O10+ superconductors was prepared using a solid state reaction metallurgy method with studying the partial substitution of bismuth with (Ag 50%, Cu 50%) at a concentration of x = 0,0.2,0.4,0.6, 0.8, samples were sintered at a sintering temperature of 760 ° C 160 h. The structural and electrical properties and the effect of partial substitution on them have been studied. The results of the X-ray diffraction analyzed, lattice parameters (a, b, c), the volume per unit cell were calculated. The results showed that all samples have polycrystalline and orthorhombic structure, in addition, all samples under experiment have the highest 2223 major phase compared to the other phases. The partial substitution affected the values of the lattice constants. the electrical properties examination was performed to obtain the critical temperature using the four-point technique and showed the highest critical temperature when x = 0.2 equals 124K for Bi1.8AgO0.1CuO0.1Ba2Ca2Cu3O10+ compound.