Synthesis and Physicochemical Properties of Er0.5Dy0.5Ba2Cu3O6.83 Cuprate High-Temperature Superconductor
P. Pęczkowskia, b, M. Kowalikc, Z. Jaegermannb, P. Szternerb, P. Zachariaszd, W.M. Wochc
aCardinal Stefan Wyszyński University, Faculty of Mathematics and Natural Sciences. School of Exact Sciences, Department of Physics, K. Wóycickiego 1/3, 01-938 Warsaw, Poland
bInstitute of Ceramics and Building Materials, Department of Ceramic Technology, Postępu 9, 02-676 Warsaw, Poland
cAGH University of Science and Technology, Faculty of Physics and Computer Science, Department of Solid State Physics, al. A. Mickiewicza 30, 30-059 Cracow, Poland
dInstitute of Electron Technology, Department of Microelectronics, Zabłocie 39, 30-701 Cracow, Poland
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The aim of this research was an analysis of physicochemical properties of a ceramic high-temperature superconductor Er0.5Dy0.5Ba2Cu3O6.83. Qualitative and quantitative phase analysis of the raw material sintering and annealing in oxygen atmosphere was performed by method of X-ray diffraction. The structural analysis revealed that the high-temperature superconductors mainly crystalize in orthorhombic phase with small traces of BaCuO2 and CuO. Local microstructure analysis was carried out by scanning electron microscopy. The thermogravimetric and differential thermal analysis show that in addition to the presence of the main phase, other phases are also observed. Critical temperatures Tc0 and Tc, critical current density Jc and superconducting transition width ΔT were evaluated from resistance and AC susceptibility measurements.

PACS numbers: 74.25.-q, 74.25.Bt, 74.25.Sv, 74.72.-h