Sol-Gel preparation and characterization of fluorine substituted Bi(Pb)SCCO-2223 HTSC

Lina Ben-Dor*, J. H. Greenberg, V. Beilin, D. Shafranek

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Bi2-xPbxSr2Ca2Cu3OyF0.7 was prepared by sol-gel using citric acid and ethylene glycol. Thermodynamic calculations showed that a considerable loss of fluorine is to be expected. The samples were characterized by structural, thermal and physical methods. AAS showed that no appreciable amount of lead was lost during sintering. For x=0.35 the height Tc was observed, viz. 116K (onset). Using a selective fluoride electrode it was found that only up to 10% of the initial fluorine remained. The EPMA results showed that up to 90% of the sample contained (BiPb)SCCO-2223 the rest being (SrCa)2Cu3Oy. Fluorine could not be detected by this method. Fluorine lead to significant enhancement of the phase formation.

Original languageEnglish
Pages (from-to)931-932
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume235-240
Issue numberPART 2
DOIs
StatePublished - Dec 1994

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