EFFECT OF THE SINTERING ON MICROSTRUCTURE AND SUPERCONDUCTING PROPERTIES OF YBA2CU3O7-δ CERAMICS

Authors

  • M MAHTALI Université de Constantine 1
  • A BOUBEGHAL Université de Constantine 1
  • A BOUABELLOU Université de Constantine 1

Keywords:

YBa2Cu3O7-δ high-Tc superconductors, X-ray diffraction (XRD), scanning electron microscopy (SEM), thermal analysis (TDA-TGA), Sintering

Abstract

Superconducting YBa2Cu3O7-δ (Y-123) ceramics were prepared by the solid-state reaction method. The microstructure and superconducting properties of the sintered samples obtained under various conditions were investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), thermal analysis (TDA-TGA) and electrical resistivity
measurements. The study showed that the calcination at 800°C for 30 hours of theY2O3, BaCO3 and CuO mixture led to the starting of the Y-123 and BaCuO2 phases’ formation. However, in the temperature range of 950 - 990°C, Y-123 crystallized and became predominate compound. For
higher temperatures (near 1100°C), green Y2BaCuO5 phase was formed. A (00l) preferred orientation of Y-123 grains was occured after sintering in air at temperatures 950-990°C for 30 hours. The textured samples presented the best transport properties

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Author Biographies

M MAHTALI, Université de Constantine 1

Laboratoire des Couches Minces et Interfaces

A BOUBEGHAL, Université de Constantine 1

Laboratoire des Couches Minces et Interfaces

A BOUABELLOU, Université de Constantine 1

Laboratoire des Couches Minces et Interfaces

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Published

2005-06-01

How to Cite

MAHTALI, M., BOUBEGHAL, A., & BOUABELLOU, A. (2005). EFFECT OF THE SINTERING ON MICROSTRUCTURE AND SUPERCONDUCTING PROPERTIES OF YBA2CU3O7-δ CERAMICS. Sciences & Technology. A, Exactes Sciences, (23), 39–42. Retrieved from https://revue.umc.edu.dz/a/article/view/179

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