The Preparation and Characterization of Y145 Superconductor

Abstract

In this research, we synthesized and characterized the physical properties of YBa2Cu3Ox (Y123) and YBa4Cu5Ox (Y145) superconductors by solid state reaction and melt process. The raw materials Y2O3, BaCO3 and CuO were mixed, ground and react in the air atmosphere at 950 °C, at 980 °C for solid state reaction and melt process, respectively. The samples obtained were characterized by the resistivity measurement, SEM, EDX, XRD and DTA. It was found that the critical temperature onset of Y145 is 94 K and 96 K for solid state reaction and melt process, respectively. The samples were inhomogeneous with no impurity. The crystal structures was orthorhombic which a = 3.80446 Å, b = 3.86474 Å and c = 19.37104 Å for Y145 solid state reaction and a = 3.80180 Å, b = 3.86483 Å and c = 19.38194 Å for melt process. The peritectic temperature of Y145 is 1018 °C.

Effect of Ag₂O Doping on Some Physical Properties Y145 Superconductor

“…Here, the T c onset temperature was taken as the temperature at which the tangent of the resistivity versus temperature curve intersects with the tangent of the part where resistivity dropped abruptly and T c offset was defined as the temperature at which the resistivity readings reached zero. The highest critical temperature was in Y145+0.1Ag sample with T c onset at 96 K and the lowest was found in pure Y145 at 95 K. Our critical temperature found was in the same range of YBaCuO superconductor [10][11][12][13]. Here, Chainok et.al [13] found the critical temperature onset of Y145 superconductors at 94 K and 96 K prepared by solid state reaction and melt process.…”

“…The highest critical temperature was in Y145+0.1Ag sample with T c onset at 96 K and the lowest was found in pure Y145 at 95 K. Our critical temperature found was in the same range of YBaCuO superconductor [10][11][12][13]. Here, Chainok et.al [13] found the critical temperature onset of Y145 superconductors at 94 K and 96 K prepared by solid state reaction and melt process. From Fig.…”

“…The critical temperature in range 88-94°C was found. Chainok et.al [13] synthesized and characterized the physical properties of YBa 2 Cu 3 O x (Y123) and YBa 4 Cu 5 O x (Y145) superconductors by solid state reaction and melt process. They found that the critical temperature onset of Y145 is 94 K and 96 K for solid state reaction and melt process, respectively.…”

“…There are four formula of YBaCuO that having one Yttium atom in unit cell i.e. Y123, Y134, Y145 and Y156 proposed by Chainok et al [13]. The Y123 superconductor has been investigated completely.…”