Abstract:

In this paper we demonstrate the dependence of MgB2 as for its superconducting properties with respect to different thermal profiles used at the manufacturing stage of the compound. A colligation is made between the change of the superconducting capabilities and the structure of the final material. The samples were characterized, as far as the structure is concerned, with an X-ray diffractometer, a scanning electron microscope, and a differential thermal analyzer. As for the superconductivity aspect of the compound, the dependence of the magnetic ac susceptibility and resistivity with respect to temperature was determined. (c) 2004 Elsevier B.V. All rights reserved.