Effect of Ca2PbO4 additions on the formation of the 110 K phase in Bi-Pb-Sr-Ca-Cu-O superconducting ceramics

F. H. Chen*, H. S. Koo, Tseung-Yuen Tseng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

The growth of the Bi2Sr2Ca2Cu 3Ox phase in the high Tc superconducting Bi-Pb-Sr-Ca-Cu-O system through reacting Bi2Sr2CaCu 2Ox with Ca- or Cu-rich intermediate phases, Ca 2CuO3, CuO, and Ca2PbO4, has been studied. X-ray diffraction and electrical and diamagnetic analyses revealed that the interaction and interdiffusion of these intermediate phase led to the formation of a high percentage of the 2223 phase and a sharp single-step superconducting transition at Tc(R = 0) = 108 K. Also, Ca 2PbO4 proved essential for accelerating the growth rate of the 110 K phase from the 85 K phase.

Original languageEnglish
Pages (from-to)637-639
Number of pages3
JournalApplied Physics Letters
Volume58
Issue number6
DOIs
StatePublished - 1 Dec 1991

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