Synthesis and study the structural and electrical and mechanical properties of high temperature superconductor Tl0.5Pb0.5Ba2Can-1CunxNixO2n+ 3-δ substituted with nickel oxide for n = 3

الملخص EN

The effect of nickel oxide substitution on the pure phases superconductor Tl0.5Pb0.5Ba2Can- 1Cun-xNixO2n+3-δ (n = 3) where x = (0, 0.2, 0.4, 0.6, 0.8 and 1.0) is studied in this research.

The specimens in this work were prepared with used procedure of solid state reaction with sintering temperature 8500C for 24 h.

We used technical (4-prob) to calculated and the critical temperature Tc .

The results of the XRD diffraction analysis showed that the structure for pure and doped phases was tetragonal with phases high-Tc phase (1223), (1212) and low-Tc phase (1202) and add to the presence of some impure phase.

It was noted the value a = b,c the parameter of the lattice increment with the increment of Ni content.

The increment of (NiO) concentration effects electrical resistivity, dielectric constant and the hardness.