Origin of the incommensurate modulation of the 80-K superconductor Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8. 21 derived from isostructural commensurate Bi sub 10 Sr sub 15 Fe sub 10 O sub 46

Journal Article · Sun Oct 01 00:00:00 EDT 1989 · Physical Review (Section) B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.40.6810· OSTI ID:5375071

Le Page, Y; McKinnon, W R ^[1]; Tarascon, J; Barboux, P ^[2]

---

1. Division of Chemistry, National Research Council of Canada, Ottawa, Canada K1A0R9 (CA)
2. Bell Communications Research, 331 Newman Springs Road, Red Bank, New Jersey 07701

The compound Bi{sub 10}Sr{sub 15}Fe{sub 10}O{sub 46} is shown to be isostructural with the 80-K superconductor Bi{sub 2}Sr{sub 2}Ca{sub 2}O{sub 8.21}. The incommensurate modulation of the Cu compound is commensurate in the crystal of the Fe compound that was selected. The modulation is caused by the insertion of extra oxygen atoms in the Bi layers and results in corrugated slabs. The structure of the Bi-O layers can be described as roughly 70% of rocksalt type and 30% of oxygen-deficient perovskite type. The results explain the excess oxygen in the superconductor, the mechanism causing the corrugation, and the inelastic bending property displayed by single crystals. They also reconcile apparently discrepant results about the oxygen distribution in the bismuth layers.

• OSTI ID: 5375071
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Vol. 40:10; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH OXIDES
CRYSTAL STRUCTURE
CALCIUM OXIDES
COPPER OXIDES
IRON OXIDES
STRONTIUM OXIDES
ELECTRON MICROSCOPY
SUPERCONDUCTIVITY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
IRON COMPOUNDS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
STRONTIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360206* - Ceramics
Cermets
& Refractories- Radiation Effects
656100 - Condensed Matter Physics- Superconductivity