Iodine and bromine intercalation into the Bi-2222 phase of Bi2Sr2(Gd0.82Ce0.18)2Cu2O10+σ

Yoji Koike, Toshikatsu Hisaki, Keiichi Sasaki, Akihiko Fujiwara, Takashi Noji, Yoshitami Saito

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3 Citations (Scopus)

Abstract

We have succeeded in synthesizing a new intercalation compound Bi2Sr2(Gd0.82Ce0.18)2Cu2O10+δI with stage-1 structure. The increase in spacing between the BiO-BiO double layers through the iodine intercalation is 3.7 Å. The electrical resistivity and superconductivity have been investigated for iodine-intercalated samples of Bi2Sr2(Gd0.82Ce0.18)2Cu2O10+δIx with 0≦x≦1 and bromine-intercalated ones of Bi2Sr2(Gd0.82Ce0.18)2Cu2O10+δBrx with 0≦x{less-than or approximate}0.2. It has been found that non- superconducting assintered samples of Bi2Sr2(Gd0.82Ce0.18)2Cu2O10+δ become superconducting at low temperatures below about 20 K through the light bromine intercalation. This suggests that the role of annealing under high pressures of oxygen in the appearance of superconductivity for the Bi-2222 phase is to supply the CuO2 sheets with enough hole carriers.

Original languageEnglish
Pages (from-to)31-37
Number of pages7
JournalPhysica C: Superconductivity and its applications
Volume224
Issue number1-2
DOIs
Publication statusPublished - 1994 Apr 20

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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