Abstract
Visualized XRD-profile of lutetium-thorium co-doped-2212-BSCCO and unit cell diagram shows CuO6-polyhedra units inside 2212-BSCCO structure. [Display omitted]
► Optimally co-doped Lu–Th-superconductor sample crystallized in tetragonal phase 2212-BSCCO. ► The fingerprint of both structures experimental and theoretical are nearly identical. ► The average grain size in different spots inside the sample found in between 0.35 and 1.45μm. ► After maximum Nd-laser irradiation dose the morphology of the surface is directed and oriented. ► The Tc-onsets of the optimally co-doped Lu–Th-sample increase as irradiation power and duration time increases.
Lutetium–thorium optimally co-doped sample with general formula Bi2−x−yLuxThySr2Ca1Cu2O8 where x=y=0.15mol was selected to be the target for three different doses of Nd-laser beam irradiations the 1st 15W/cm2 for 60min, 2nd 30W/cm2 for 120min and 3rd 45W/cm2 for 240min, respectively. Nd-Laser irradiations doses were monitoring as function of micro-structure, superconducting and structural features of Lu–Th-optimally co-doped 2212-BSCCO. AFM and SE-microscopy were applied to investigate changes occurred in the surface's layers after each Nd-laser irradiation dose. Both of bulk superconductivity and surface resistivity were measured to establish the promotion occurred on the superconducting features due to Nd-laser irradiation doses.