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Superconducting properties of Ba(Pb, Bi)O3 single crystals and melt-processed (Ba, K)BiO3

✍ Scribed by M. Grumann; G. Balakrishnan; C.V. Tomy; D.McK. Paul

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 325 KB
Volume: 226
Category: Article
ISSN: 0921-4534
DOI: 10.1016/0921-4534(94)90207-0

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✦ Synopsis

Single crystals of the superconductor BaPbt _xBixO3 with nominal compositions of x=0.25, were grown by cooling from the melt using an excess of PbO. The superconducting transitions have been measured on the grown crystals as a function of oxygen annealing and sharp transitions with T¢on~t at 12 K have been observed. The related perovskite Bat _xKxBiO3 superconductor (x = 0.4) has been synthesized by a new melt-processing technique using an infra-red image furnace. The melt-processed material on post annealing, is superconducting with T¢on~t ~ 25 K. The superconducting properties of these two families of superconductors are presented.

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