Crystal chemistry and superconductivity of the copper oxides

Journal Article · Fri Aug 31 20:00:00 EDT 1990 · Journal of Solid State Chemistry; (USA)

DOI:https://doi.org/10.1016/0022-4596(90)90209-G· OSTI ID:6335028

Goodenough, J B; Manthiram, A ^[1]

---

1. Univ. of Texas, Austin (USA)

This paper highlights the important roles played by crystal chemistry in controlling the superconductive properties of the intergrowth structures of the copper oxides. Bond-length matching across the intergrowth interface stabilizes at least four different structures - T/O, T{prime}, T*, and T{double prime} - in the simplest system La{sub 2{minus}y}Ln{sub y}CuO{sub 4} (Ln = lanthanide) depending upon the size of Ln and the value of y. The internal electric field created by the formal charges in the adjacent layers modulates the distribution of holes between the active and inactive layers and the influence of Pr on superconductivity. The coordination geometry preferred by different oxidation states of Cu appears to control the oxygen ordering and the T{sub c} variation in the YBa{sub 2}Cu{sub 3}O{sub 6+x} system. The c-axis Cu-O distance modulates the width of the conduction band and the electronic properties.

• OSTI ID: 6335028
• Journal Information: Journal of Solid State Chemistry; (USA), Journal Name: Journal of Solid State Chemistry; (USA) Vol. 88:1; ISSN JSSCB; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELECTRONIC STRUCTURE
ELEMENTS
HIGH-TC SUPERCONDUCTORS
LATTICE PARAMETERS
METALS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
RARE EARTHS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS