Influence of Dysprosium Addition on the Phase Formation and Transport Properties of Hg-1223 Superconductor.

We study the influence of dysprosium (III) oxides on the superconductivity properties of Hg-1223 material. Dysprosium-free Hg-1223 and dysprosium-doped HgBa₂Ca₂Cu₃Dy_xO_8+δ (x = 0.00–0.075 wt%) superconductors are synthesized by sealed quartz tube technique. Our results demonstrate that a presence of dysprosium oxide not only makes the Ba₂Ca₂Cu₃O_y multiphase precursor more reactive and enhances the kinetics of the reaction, but also leads to the promotion of the high-Tc phase and enhancement of the transport critical current densities J_c. [ABSTRACT FROM AUTHOR]