Improving the electrical and thermal conductivity of Pb_1-xHg_xBa₂Ca₂Cu₃O_8+d superconducting compound by partial replacement of lead with mercury

In this paper, Five samples of ceramics with nominal elemental formula Pb1-xHgxBa2Ca2Cu3O8+d were synthesized by solid state reaction ,the lead-based superconducting with x =0, 0.05. 0.1, 0.15, 0.2, and 0.25 compound is results for investigating high-temperature transitional superconductors are briefly studied. The main idea of this research is to study the effect of partial substitution of lead with mercury and the effect on its superconducting coefficients. The transition temperatures for each substitution value of mercury were also determined. It was found that increasing the concentration of mercury leads to a clear change in the transition temperatures of the superconductivity. In addition, the effects of this substitution on thermal conductivity were studied, as the results showed that the thermal conductivity diminishes with increasing temperature and that it changes with the change in mercury concentration.