Study of Structural and Electrical Properties of Composition Tl2-xHgxSr2-yBayCa2Cu3O10+δ Superconductor | ||
| Tikrit Journal of Pure Science | ||
| Article 1, Volume 19, Issue 6, December 2014, Pages 193-201 | ||
| Authors | ||
| Abdul Kareem Dahash Ali; Rafaa Abdul Kareem Mohammed; Sarah Ahmed Taha | ||
| Abstract | ||
| Abstract Samples of the compound (Tl2Sr2Ca2Cu3O10+8) had been studied and prepared by solid state reaction using annealing method under different temperatures and hydrostatic pressures. We found that the best annealing temperature is 840OC and best hydrostatic pressure is 8ton/cm2. Studying the X-ray diffraction for the prepared compound at 840OC annealing temperature and 8ton/cm2 hydrostatic pressure showed that it has a crystalline structure of Tetragonal type. Also it showed that the best ration of oxygen in the compound (S) is (10.42), and this ratio gave the highest value for the critical temperature Tc, as this proportion of oxygen in the compound has a basic role in increasing the critical temperature value. At the molecular compensation for the element Mercury (Hg) in the element Thallium (TL), and the element Barium (Ba) in the element Strontium (Sr) at the same time, the compound becomes as the following formula: Tl2-xHgxSr2-yBayCa2Cu3O10+8 with different rates of (x,y) equal (x= 0.3, y=0.1, 0.2, 0.3, 0.4). The compound keeps on its Tetragonal type at the molecular compensation where the critical temperature for the compound increased from 1420k to 1480k at the compensation rate of (x=0.3, y=0.1). But when the compensation rate of (x) and (y) increased, a change occurred in the crystalline structure and decreasing the critical temperature. Also, in this research, we study the samples; examine the crystalline, surface, qualitative and quantitative structure by the scanning electron microscope; finding the rates of the elements in the compound, and the impact of the molecular compensation in the elements for the compound; determine the percentage of oxygen and quantitative composition of the elements in the compound. | ||
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