Open AccessEffect of Nickel Substitution On Structural and Electrical Properties of Hg0.5Pb0.5Ba2Ca2Cu3-yNiyO8+δ Superconductor Composite
Author(s) -
Laheeb A. Mohammed,
Kareem A. Jasim
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1234/1/012047
Subject(s) - nickel , tetragonal crystal system , analytical chemistry (journal) , electrical resistivity and conductivity , crystallite , materials science , superconductivity , sintering , metal , phase (matter) , crystal structure , mineralogy , metallurgy , crystallography , chemistry , condensed matter physics , physics , organic chemistry , chromatography , electrical engineering , engineering
six specimens of the Hg 0.5 Pb 0.5 Ba 2 Ca 2 Cu 3-y Ni y O 8+δ (y=0.2,0.4,0.6,0.8,1.0) superconducting compound were prepared by solid state reaction method, with sintering temperature equal to 1123K for 24 hours. The electrical resistivity was examined by the four probe technique, It was found that all the specimens have metallic behavior and increasing the critical temperature with increasing nickel concentration. The optimum critical temperature T c was found equal to 137.5 K when the value of nickel concentration y=0.8. The structural of all the specimens studied by using XRD analysis, this examination showed the crystal structure of the specimens is polycrystalline with tetragonal structure. The volume fraction of high phase Hg 0.5 Pb 0.5 Ba 2 Ca 2 Cu 3-y Ni y O 8+δ superconducting (Hg-1223 phase) increase up to 81.737% by increasing Ni concentration for y=0.8, The increasing in nickel concentration causes due to increase the high-phase 1223 and increment of c parameter.