Preparation and characterization of nearly domain free 123-oxide showing a superconducting transition width of ∼1.1K Academic Article uri icon

abstract

  • YBa2Cu3O7-∂ has been prepared by coprecipitation of the corresponding metal ions by hydroxy-carbonate method. A nearly stoichiometric 123-oxide is obtained after a single firing step in flowing O2. This oxide shows a zerotransition temperature of 92.6 K and a transition width of ∼1.1 K. The oxides prepared at 1173 K and 12 hours of heating in flowing oxygen yield nearly twin-domain-free superconductor showing no other defect structure. We have investigated the preparation of this oxide under various preparative conditions including different pH values of precipitation. © 1990.

altmetric score

  • 3

author list (cited authors)

  • Clearfield, A., Ram, R., Wang, R., & Dufner, D. C.

citation count

  • 3

publication date

  • July 1990