Superlattice structures between YBa2Cu3O7-δ and (Pb,Cu)Sr2(Ca,Y)Cu2O7-δ high-Tc cuprates

Shu-Fen Hu, R. S. Liu, D. A. Jefferson

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A solid solution range exists between the systems YBa2Cu3O7-δ and (Pb,Cu)Sr2(Ca,Y)Cu2O7-δ has been successfully synthesized. The microstructures across the solid solution are complicated by the presence of an incommensurate or commensurate modulation. However, the studies indicate unambiguously that the structural modulation is neither a necessary nor sufficient condition for superconductivity among the composition across the solid solution. The modulation may be controlling the cation/oxygen positions in the charge reservoir layers, originating from the different oxygen positions in the perovskite-type (123-type) YBa2Cu3O7-δ and the rock salt-type (1212-type) (Pb,Cu)Sr2(Ca,Y)Cu2O7-δ. The discovery of the superlattice structures between YBa2Cu3O7-δ and (Pb,Cu)Sr2(Ca,Y)Cu2O7-δ adds yet a further chemical dimension to these systems, and may extend the possible avenues of research not only for superconductivity but also for structural chemistry.

Original languageEnglish
Pages (from-to)645-649
Number of pages5
JournalInternational Journal of Inorganic Materials
Volume2
Issue number6
DOIs
Publication statusPublished - 2000 Dec 1

Fingerprint

Solid solutions
Modulation
Superconductivity
Oxygen
Perovskite
Cations
Salts
Positive ions
Rocks
Microstructure
Chemical analysis
barium copper yttrium oxide
perovskite

Keywords

  • A. Oxides
  • C. Electron diffraction
  • D. Microstructure
  • Electron microscopy
  • Superconductors

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Superlattice structures between YBa2Cu3O7-δ and (Pb,Cu)Sr2(Ca,Y)Cu2O7-δ high-Tc cuprates. / Hu, Shu-Fen; Liu, R. S.; Jefferson, D. A.

In: International Journal of Inorganic Materials, Vol. 2, No. 6, 01.12.2000, p. 645-649.

Research output: Contribution to journalArticle

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