Jpn. J. Appl. Phys. 27 (1988) pp. L365-L368 |Next Article| |Table of Contents|
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Identification of the Superconducting Phase in the Bi-Ca-Sr-Cu-O System
National Institute for Research in Inorganic Materials
(Received February 8, 1988; accepted for publication February 18, 1988)
In order to identify the superconducting phase in the Bi-Ca-Sr-Cu-O system, phase search experiments were performed. The results of power X-ray study, EPMA study, specific gravity measurements and oxygen analysis revealed that the compound having the composition Bi2(Ca, Sr)3Cu2O9 or Bi2(Ca, Sr)3-ΔxCu2O9-Δy is responsible for the high-Tc superconductivity. Two possible structure models, which are closely related to the structure of the bismuth titanate Bi4Ti3O12, are proposed for this compound.
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