Optimization of Synthesis Parameters for the Formation of Promising Y3Ba5Cu8O18 Compound

Abstract

In the present work, the influence of various heat treatment conditions such as sintering temperature, duration and compacting pressure, on the structure, microstructural and electrical properties of the new Y3Ba5Cu8Oy (noted Y-358, YBCO family)superconducting material was investigated. Samples were produced by means of the standard solid-state reaction process. The structural and microstructural characterizations of the various synthesized products were investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM). The electrical resistivity as a function of temperature was also performed and examined. The analyses show that the optimal structural formation was achieved for the product prepared at 950°C for 48 h. This sample exhibited a superconducting transition temperature (Tco) value around 95 K.