Jpn. J. Appl. Phys. 27 (1988) pp. L1620-L1622 |Next Article| |Table of Contents|
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The Superconductivity in the Bi-Sr-Ln-Cu-O System (Ln=Pr, Nd and La)
Department of Physics, Aoyama-Gakuin University
1Canon Research Center
(Received April 21, 1988; accepted for publication August 17, 1988)
The superconductivity in samples nominally described as Bi2(Sr1-xLnx)2Cu1+nOy (Ln: lanthanide elements and yttrium: n=0 and 1) was investigated. The effect of an increasing TC compared with that of Bi2Sr2CuOy was observed for Ln=La, Pr and Nd. The highest end-point of the transition temperature of Bi2(Sr1-xNdx)2CuOy was 20.4 K with x=0.25. Compounds described as Bi2(Sr0.95Ln0.05)2CuOy (Ln=Pr and Nd) had an onset TC of about 60 K, and small but definite Meissner effects were also observed.
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