The study on critical temperature of YBa5Cu6Ox superconductor dope Fe2O3

Abstract

This research studied on critical temperature of YBa₅Cu₆O_x superconductor dope Fe₂O₃. Y₂O₃, BaCO₃, CuO, and Fe₂O₃ were mixed in mortar and prepared by solid state reaction. The calcination and sintering temperature were set at 900 ^oC and then low a temperature at 550 ^oC  for annealing temperature. Physical properties of superconductor were analyzed by a four-point probe method, scanning electron microscope (SEM), energy dispersive X-ray spectrometer (EDX). We found the highest critical temperature at 94.5 K on Y156 superconductor was doped by Fe = 0.001 Wt%. The Fe doping samples had a grain size about 3 to 6 microns. In addition, the non-dispersion of elements and porous were occured in the structure.