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Phases and their relations in the Bi-Sr-Cu-O system

✍ Scribed by Yasunori Ikeda; Hiroyuki Ito; Shinichi Shimomura; Yasushi Oue; Kazuhisa Inaba; Zenji Hiroi; Mikio Takano


Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
819 KB
Volume
159
Category
Article
ISSN
0921-4534

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Copper valency of superconducting phases
✍ F.H. Chen; H.S. Koo; S.C. Wu; T.Y. Tseng; S.R. Horng; M.F. Tai πŸ“‚ Article πŸ“… 1992 πŸ› Elsevier Science 🌐 English βš– 414 KB

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