Influences of the cu substitution at hg site in Hg1 - xCuxBa2Ca2Cu3O8+δsuperconductors

الملخص EN

The influences of the Cu substitution at Hg site in the HgOlayer, upon the microstructure, Tc and oxygen content of Hg-1223 have been investigated.

High temperature superconductor with a nominal composition Hg1-xCuxBa2Ca2Cu3O8 + δ for Cu ( 0 x 0.5) have been prepared by the two-steps solid state reaction method under optimum conditions.

XRD showed a tetragonal structure with a high ratio of Hg-1223 superconductor phase.

Tc enhancement has been determined with the Cu concentration was is found to be Tc = 153 K for x = 0.3, while the oxygen content observed variously with Cu concentration.

Hg1-xCuxBa2Ca2Cu3O8+δ structure, oxygen content and Tc behavior have been discussed.