EFFECT OF LEAD CONTENT ON NONSTOICHIOMETRIC BI2-XPBYSR2CA2CU3O-DELTA CERAMIC SUPERCONDUCTORS

Authors
DIAZVALDES E PACHECOMALAGON G CONTRERASPUENTE G MEJIAGARCIA C ANDRADEGARAY G ORTIZLOPEZ J CONDEGALLARDO A FALCONY C
Citation
E. Diazvaldes et al., EFFECT OF LEAD CONTENT ON NONSTOICHIOMETRIC BI2-XPBYSR2CA2CU3O-DELTA CERAMIC SUPERCONDUCTORS, Materials chemistry and physics, 36(1-2), 1993, pp. 64-67
Citations number
10
Categorie Soggetti
Material Science
Journal title
Materials chemistry and physics → ACNP
ISSN journal
02540584
Volume
36
Issue
1-2
Year of publication
1993
Pages
64 - 67
Database
ISI
SICI code
0254-0584(1993)36:1-2<64:EOLCON>2.0.ZU;2-B
Abstract
Ceramic superconducting samples of the type Bi2-xPbySr2Ca2Cu3Odelta we re processed with a nonstoichiometric content of Bi and Pb (x not equa l y) with respect to the 2223 phase in this system. The resistance vs. temperature characteristics and the presence of the 2223 and 2212 pha ses as a function of the sample preparation conditions and the lead co ntent (Bi/Pb ratio) are reported. The growth of unwanted phases such a s PbO was observed for those samples with a high content of Pb (y=0.9) and Bi (x=0.1).