Synthesis of oxycarbonate solid solutions (Tl1-xHgx)Sr2Ba2Cu2(CO3) (x=0-1.0) and superconductivity

T. Noda, M. Ogawa, J. Akimitsu, M. Kikuchi, E. Ohshima, Y. Syono

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Solid solution superconductors (Tl1-xHgx)Sr2Ba2Cu2(CO3)Oy were synthetized for x=0-1.0. The crystal structures, especially its superstructure and superconducting properties, were examined by X-ray powder diffraction, electron microscopy, resistivity and susceptibility measurements. The three different crystallographic phases have been observed; Phases I and II have an 8 times commensurate and 7.5 times incommensurate crystal structure and their propagation vector is along [010]. Phase III has a 4.7-4.5 times incommensurate structure along the [110] direction. The discontinuous change at about x=0.7-0.8 is due to the oxygen deficiency with increasing Hg content Tc also suddenly dropped from 70 to 60 K at about x=0.7-0.8.

Original languageEnglish
Pages (from-to)12-16
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume242
Issue number1-2
DOIs
Publication statusPublished - Feb 1 1995
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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