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Synthesis of Single Phase Hg-1223 High Tc Superconducting Films With Multistep Electrolytic Process

D. D. Shivagan·P. M. Shirage·L. A. Ekal·S. H. Pawar
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Abstract

We report the multistep electrolytic process for the synthesis of high Tc single phase HgBa2Ca2Cu3O8+ (Hg-1223) superconducting films. The process includes : i) deposition of BaCaCu precursor alloy, ii) oxidation of BaCaCu films, iii) electrolytic intercalation of Hg in precursor BaCaCuO films and iv) electrochemical oxidation and annealing of Hg-intercalated BaCaCuO films to convert into Hg1Ba2Ca2Cu3O8+ (Hg-1223). Films were characterized by thermo-gravimetric analysis (TGA) and differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrolytic intercalation of Hg in BaCaCuO precursor is proved to be a novel alternative to high temperature-high pressure mercuration process. The films are single phase Hg-1223 with Tc = 121.5 K and Jc = 4.3 x 104 A/cm2.

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D. D. Shivagan, P. M. Shirage, L. A. Ekal, S. H. Pawar. 2003-05-03. Synthesis of Single Phase Hg-1223 High Tc Superconducting Films With Multistep Electrolytic Process. https://doi.org/10.1088/0953-2048%2F17%2F1%2F034

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