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

doi:10.1016/S1466-6049(00)00054-4

Superlattice structures between YBa₂Cu₃O_7-δ and (Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-δ high-T_c cuprates

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

Department of Physics

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

A solid solution range exists between the systems YBa₂Cu₃O_7-δ and (Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-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) YBa₂Cu₃O_7-δ and the rock salt-type (1212-type) (Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-δ. The discovery of the superlattice structures between YBa₂Cu₃O_7-δ and (Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-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 language	English
Pages (from-to)	645-649
Number of pages	5
Journal	International Journal of Inorganic Materials
Volume	2
Issue number	6
DOIs	https://doi.org/10.1016/S1466-6049(00)00054-4
Publication status	Published - 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

Hu, S-F., Liu, R. S., & Jefferson, D. A. (2000). Superlattice structures between YBa₂Cu₃O_7-δ and (Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-δ high-T_c cuprates. International Journal of Inorganic Materials, 2(6), 645-649. https://doi.org/10.1016/S1466-6049(00)00054-4

Superlattice structures between YBa₂Cu₃O_7-δ and (Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-δ high-T_c 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 journal › Article

Hu, S-F, Liu, RS & Jefferson, DA 2000, 'Superlattice structures between YBa₂Cu₃O_7-δ and (Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-δ high-T_c cuprates', International Journal of Inorganic Materials, vol. 2, no. 6, pp. 645-649. https://doi.org/10.1016/S1466-6049(00)00054-4

Hu S-F, Liu RS, Jefferson DA. Superlattice structures between YBa₂Cu₃O_7-δ and (Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-δ high-T_c cuprates. International Journal of Inorganic Materials. 2000 Dec 1;2(6):645-649. https://doi.org/10.1016/S1466-6049(00)00054-4

Hu, Shu-Fen ; Liu, R. S. ; Jefferson, D. A. / Superlattice structures between YBa₂Cu₃O_7-δ and (Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-δ high-T_c cuprates. In: International Journal of Inorganic Materials. 2000 ; Vol. 2, No. 6. pp. 645-649.

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10.1016/S1466-6049(00)00054-4