Preparation (HgBa2Ca2Cu2.85La0.15O8+δ) compound and Study of the impact of partial substitution of mercury with (In2O3)on the structural characteristics

Abstract

In the current work, we focused on the impact of Indium oxide partial substitution at the (Hg) site on the structural characteristics of the (HgBa₂Ca₂Cu_2.85La_0.15O_8+δ) compound with (0,0.05,0.1,0.15,0.2 and 0.25).  Samples were prepared by the (SSR) method. The combined powder was crushed with a pressure of 7 tons per square centimeter to create a disc with a thickness of (0.2 cm) and a diameter of (1.5 cm). The samples sintered for 24 hours at a rate that was changed from ambient temperature to 820 °C. For the samples which were doped with (In=0.05) in comparison to other samples, the highest value of the c-axis lattice parameter and a pseudo-tetragonal structure were discovered using (XRD) analysis. It was discovered that altering the In concentrations in all of the results of our sample changes the volume fraction V_Ph(1223), mass density d_m, and  c/a. It was also determined that the change in lattice parameters, degree of crystallinity, crystal size, and strain (in different ways) resulted from a change in the indium oxide concentrations for all samples.