Effects of iodine intercalation on the superconducting properties of the Bi2Sr2-xLaxCuOz compound

Y. Muraoka, M. Kikuchi, H. Nameki, S. Awaji, R. Suzuki, N. Kobayashi, Y. Syono

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Iodine intercalation of Bi2Sr2-xLaxCuOz (0.4 ≤ x ≤ 1.0) was studied. Transition from orthorhombic pristine phase to tetragonal intercalated phase was observed due to iodine intercalation. The expansion of the c-axis of the stage-1 intercalation compound increases slightly with increasing La content x. The Tc of iodine-intercalated specimens with 0.4 ≤ x ≤ 0.6 decreases from that of the pristine, but in the range of 0.7 ≤ x ≤ 0.9, the Tc of the intercalated specimen increases with respect to that of the pristine phase. Especially, the non-superconducting specimen with x = 0.9 became superconducting due to intercalation. This result demonstrates hole doping by iodine intercalation, i.e. the Cu valence of the pristine compound is increased.

Original languageEnglish
Pages (from-to)402-406
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume215
Issue number3-4
DOIs
Publication statusPublished - Oct 1 1993
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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