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Superconductivity and oxygen deficiency in CaLaBaCu3Ox

✍ Scribed by Takaaki Yagi; Mikihiko Domon; Yoshitoshi Okajima; Kazuhiko Yamaya

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
333 KB
Volume
165-166
Category
Article
ISSN
0921-4526

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✦ Synopsis

Measurements of magnetic and resistive Tc's and lattice parameters of CaLaBaCu 3 0 x (CLBCO) indicate that CLBCO is a tetragonal bulk superconductor in the range of x=6.7 to 7. As oxygen content decreases, T c decreases significantly, though there exist a plateau at 80K near x=7. No superconducting transition is observed below x=6.7. Large suppression of superconductivity observed in the region of relatively high oxygen content suggests the absence of the oxygen vacancy ordering in CLBCO.

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