The Bi based superconductors doped with B2O3

✍ Scribed by M. Veverka; O. Smrčková; D. Sýkorová; P. Vašek

• Book ID: 102616960
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 118 KB
• Volume: 21
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1006/spmi.1996.0407

✦ Synopsis

The influence of the addition of B 2 O 3 on the properties of the oxide ceramic materials Bi-Pb-Sr-Ca-Cu-O was investigated. The samples with nominal composition Bi a Pb b B c Sr 2 Ca 2 Cu 3 O x (a = 0.8-1.6, b = 0.06-0.26, c = 0.05-1.0) were prepared and studied by the measurement of the temperature dependence of the electrical resistivity and critical current density. The addition of a small amount of B 2 O 3 (c = 0.05, a = 1.8, b = 0.26) had positive influence on the critical current density. On the other hand, a high content of boron (c > 0.6, b = 0.26, a + b = 1.8) reversed the superconductor to an insulator.