Anaam W. Watan1, Hind A. Mahdi1, Kassim M. Wadi2, Kareem A. Jasim1,a), and Auday H. Shaban3
Abstract
The effects of manufacturing TlSr2Ca2Cu3O9-δ crystallized materials superconductors were investigated in this paper. The sol-gel and solid-state reaction methods were investigated by evaluating the physical parameters of the superconductor’s behaviors. The process duration for sample of Sol-gel requires 12 hours of heat procedure, while the solid-state reaction methods needs 96 hours of duration time. The sintering temperature is 860 °C for both investigated methods. The TlSr2Ca2Cu3O9-δ superconductor properties such as, Resistance variation with temperature, transformation temperature, X-ray diffraction, Atomic Force Microscope, the values of the oxygen content, lattice parameters. The samples showed very good metal behavior. The, Tc (R = 0) for Sol-gel samples and solid-state reaction was found to be at 114 K, and 111 K respectively. The results of X-ray diffraction give evidence of orthorhombic structure for all samples, and average diameter 92.36nm and 108.24nm. However, the difficulties and duration process of Sol-gel method is less than solid-state reaction. The lattice parameters (a, and c) showed that sample which preparing by sol-gel technique are larger than prepared by the solid reaction technique, while (c/a) seems to be decreased respectively.
انعام وادي وطن | anaam wadi wattan | 7327