Preparation and NMR study of fluorinated Pb-BSCCO-2223

L. Frenkel Ben-Yakar, A. Shames, B. Bandyopadhyay, S. D. Goren, C. Korn, H. Shaked, H. Selig, L. Ben-Dor, J. H. Greenberg

Research output: Contribution to journalArticlepeer-review


Samples of (BiPb)2Sr2Ca2Cu3O 10+δ (BSCCO-2223) prepared by the sol-gel route were fluorinated in ClF3, resulting in approximately 3 fluorine atoms per formula as measured by fluoride selective-electrode. The samples were characterized by x-rays diffraction (XRD) and magnetization measurements. Neither the lattice parameters nor Tc (114K) changed after the fluorination. Nuclear magnetic resonance (NMR) measurements of 19F in the temperature range of 20-400K show that for T>270K there are 2 types of F nuclei environment. At T<270K only one line is resolved. At T<Tc, the fluorine linewidth increases with decreasing temperature. This is attributed to the formation of vortices. At very low temperatures, a new structure appears. This is attributed to an enhanced NQR signal from the Cu nuclei.

Original languageEnglish
Pages (from-to)1339-1340
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Issue numberPART 3
StatePublished - 1 Jan 1997

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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