학술논문
Synthesis and Physicochemical Properties of Er0.5 Dy0.5 Ba2 Cu3 O6.83 Cuprate High-Temperature Superconductor.
Document Type
Article
Source
Subject
*CUPRATES
*HIGH temperature superconductors
*SUPERCONDUCTING transitions
*DIFFERENTIAL thermal analysis
*SCANNING electron microscopy
*CRITICAL currents
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Language
ISSN
0587-4246
Abstract
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. [ABSTRACT FROM AUTHOR]