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Superconductivity in (Pb/Cu)-“1222” copper oxides

✍ Scribed by Naomichi Sakai; Toshihiko Maeda; H. Yamauchi; Shoji Tanaka


Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
359 KB
Volume
212
Category
Article
ISSN
0921-4534

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Pb-doped Bi-Sr-Ca-Cu high-To superconducting oxides have been prepared by a modified sol-gel process via the EDTA route. Upon decomposing the X-ray photoemission spectrum of the Cu 2pa/2 core level of the superconducting oxide into three components Cu ~+, Cu 2 + and Cu 3+, we have found an obvious t