A new superconductor with 1222 structure (Cu1 - XMx)Sr2(Y1 - yCey)2Cu2Oδ(M = Ti, V, Cr, Fe, Co, Ga, Ge, Mo, Ce, W and Re)

M. Tamura, M. Sato, T. Den, J. Akimitsu

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We systematically synthesized (Cu, M)-1222 cuprates, (Cu1 - xMx)Sr2(Y1 - yCey)2Cu2Oδ (M = Ti, V, Cr, Fe, Co, Ga, Ge, Mo, Ce, W and Re), and succeeded for the first time in synthesizing new 1222 compounds with M = Ti, V, Cr, Co, Ge, W and Re. All samples except for the compound with Fe show superconductivity, giving the highest Tc ∼ 43 K for annealed M = Re sample ((Cu0.85M0.15)Sr2(Y0.75Ce 0.25)2Cu2Oδ). We compared the Tc's with the crystal structures and investigated the difference between annealed and as-sintered samples. We point out here that Tc is related to the valencies of the M-elements and the O-Cu-O angle in the CuO2 planes.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalPhysica C: Superconductivity and its applications
Volume303
Issue number1-2
DOIs
Publication statusPublished - Jul 10 1998
Externally publishedYes

Keywords

  • Cu 1222 structure
  • Cuprates
  • Superconductor

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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