AMIR SH. MAHMOOD
Abstract
This study included preparing samples of the compound (Bi2Ba2Ca2Cu3O10+δ) by the reaction of the solid state under a hydrostatic pressure 8ton/cm2 and annealing temperature 850Co ...
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This study included preparing samples of the compound (Bi2Ba2Ca2Cu3O10+δ) by the reaction of the solid state under a hydrostatic pressure 8ton/cm2 and annealing temperature 850Co . These are the best circumstances to obtain samples of the mentioned superconductivity compound at high temperatures. The study demonstrated the X-rays diffraction for the compound (Bi2Ba2Ca2Cu3O10+δ ) prepared at annealing temperature 850Co and pressure 9ton/cm2 . The study showed that it has Tetragonal type of crystal structure. At partial substitution for the component TL in Bi, and Sr component in Ba simultaneously, the compound becomes (Bi2-yTlxBa2- ySryCa2Cu3O10+δ) with (X,Y) values equal to (X = 0.05, Y= 0.1, 0.2, 0.3). The study of the crystal structure test showed that the structure retains on the tetragonal type, and the critical temperature Tc steps-up from (132k) to (138k) at substitution rate (X= 0.05, Y= 0.1). But at increasing the substitution rate for (Y) and the stability of (X) rate more than (X= 0.05, Y= 0.1), the temperature declines to (125k). Finally, The crystal structure of the samples has been studies and tested by Scanning Electron Microscope; knowing the components' rates in the compound; how the annealing temperature and the imposed pressure affect the compound; how the compound partial substitution affect in the components; and specifying the quantitative and qualitative rates of the components in the compound
