Jpn. J. Appl. Phys. 27 (1988) pp. L1626-L1628 |Next Article| |Table of Contents|
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Bulk Nature of Quench-Enhanced Superconductivity in Bi2Sr2CaCu2Ox
Department of Physics, Faculty of Science, Ibaraki University
1Department of Mathematics and Physics, The National Defense Academy
(Received June 24, 1988; accepted for publication August 17, 1988)
The lower Tc of the Bi-Sr-Ca-Cu-O (BSCCO) system can be raised by more than 15 K by quenching. This characteristic has been confirmed for a stoichiometric 2212 compound. From the ac susceptibility measurement of the powdered specimens, we revealed that the observed Tc enhancement is not filamentary but has a bulk origin. X-ray diffraction study indicated that our specimens are almost single phase and the crystalline cage is not altered drastically by quenching.
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