Abstract
Single crystals of the superconductor in the Bi-Sr-Ca-Cu-O system were prepared by the Bridgman method. Platy crystals annealed at various physical conditions were examined by electrical resistivity measurements and single crystal X-ray diffraction studies. The superconducting transition temperature (Tc) depended on the annealing temperatures and oxygen pressure. Corresponding to annealing conditions, single crystal X-ray diffraction patterns on (hk1)* Layer precession photographs systematically changed at room temperature. This may be related to the slight differences of the cell parameters of each specimen.
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