High-pressure synthesis of superconducting Sr-Ca-Cu-O samples
✍ Scribed by Seiji Adachi; H. Yamauchi; Shoji Tanaka; Nobuo Môri
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 386 KB
- Volume
- 208
- Category
- Article
- ISSN
- 0921-4534
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A new family of high-To superconducting material in the Tl-Pb-Ca-Sr--Cu-O system has been synthesized. Multiple phases with two-step superconducting transitions around 110 K and 80 K were observed resistively and magnetically. The 80 K phase has been tentatively identified to be (TI, Pb)2Sr2CuOy by
In high-pressure synthesized Pb-Sr-Ca-Cu-O samples, critical temperatures (T c) of about 115 K and 70 K are reported by Yamauchi et al. [Jpn. J. Appl. Phys., to be published]. In these samples two phases with primitive fundamental unit cell have been identified by electron-diffraction (ED) and X-ray