Abstract

In this paper, the annealing effect on the growth of both the superconducting oxide and the intermediate products is investigated by using an energy dispersive X-ray (EDX) analysis and a scanning electron microscopy (SEM) examination to get the basic information on the suitable substrate for Y-Ba- Cu-O (YBCO) or Bi-Sr-Ca-Cu-O (BSCCO) film. The results show that the heat treatment yields Ba compounds between YBCO and the substrates and Sr and Bi compounds between BSCCO and the substrates. Since the produced boundary layer of the intermediate product is the thinnest, MgO substrate can be recommended for YBCO film, and SrTiO3 substrate for BSCCO film.

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