Structural and superconducting properties of iodine-intercalated Bi2Sr2Ca1-xYxCu2Oz

Y. Muraoka, M. Kikuchi, N. Ohnishi, K. Hiraga, R. Suzuki, N. Kobayashi, Y. Syono

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16 Citations (Scopus)


The structual and superconducting properties of Bi2Sr2Ca1-xYxCu2Oz intercalated with iodine between the Bi-O bila yers were studied. Formation of the stage-1 compound was verified by X-ray analysis, TG analysis and TEM observation. Expansion of the c-axis, which is caused by increase in the distance of the BiO-BiO layers, decreases with decreasing intercalated iodine concentration down to 60%. The expansion of the c-axis of fully intercalated compounds increases with increasing Y content from 7.2 Å for x=0 to 7.5 Å for x=1.0. The temperature dependence of resistivity showed that iodine-doped samples (x=0 and 0.4) were more semiconductive than non-doped samples. The Tc of the IBi2Sr2Ca1-xYxCu2Oz series in the over-doped region was reduced by 2-10 K compared with non-intercalated samples.

Original languageEnglish
Pages (from-to)65-70
Number of pages6
JournalPhysica C: Superconductivity and its applications
Issue number1-2
Publication statusPublished - Dec 20 1992
Externally publishedYes

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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