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A new series of oxycarbonate superconductors (Cu0.5C0.5)2Ba3Can−1CunO2n+5(n=4, 5) prepared at high pressure

✍ Scribed by T. Kawashima; Y. Matsui; E. Takayama-Muromachi

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
964 KB
Volume
227
Category
Article
ISSN
0921-4534

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New oxycarbonate superconductors (Cu0.5C
New oxycarbonate superconductors (Cu0.5C0.5)Ba2Can−1CunO2n+3 (n=3, 4) prepared at high pressure
✍ T. Kawashima; Y. Matsui; E. Takayama-Muromachi 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 550 KB

In the process of searching for the phases of the Ag-Ba-Ca-Cu-O system at 1200 ° C under 5 GPa, we found the new oxycarbonate superconductors (Cuo.5Co.5) Ba2Can \_ ~CunO2~ + 3. Two members of the series with n = 3 and n = 4 were isolated as almost single phases; their structures are closely related

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Critical current densities and irreversibility lines of new oxycarbonate superconductors (Cu0.5C0.5Ba2Can−1CunO2n+3 (n = 3, 4)
✍ H. Kumakura; K. Togano; T. Kawashima; E. Takayama-Muromachi 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 305 KB

From the hystereses in DC magnetization curves, we estimated critical current densities J¢ and irreversibility fields Bi,~ of (Cuo.5Co.5) Ba2Ca2Cu3Og\_+ 6 ( (Cu, C )-1223) and (Cuo.5Co.5) Ba2Ca3Cu4Ol l \_+ a ( (Cu, C ) -1234 ) new superconductors, and the data were compared with those values reporte