Excess oxygen defects in layered cuprates

Conference · Sat Sep 01 00:00:00 EDT 1990

OSTI ID:6614880

Lightfoot, P; Pei, S Y; Jorgensen, J D ^[1]; Manthiram, A; Tang, X X; Goodenough, J B ^[2]

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1. Argonne National Lab., IL (USA)
2. Texas Univ., Austin, TX (USA). Materials Science Lab.

Neutron powder diffraction has been used to study the oxygen defect chemistry of two non-superconducting layered cuprates, La{sub 1. 25}Dy{sub 0.75}Cu{sub 3.75}F{sub 0.5}, having a T{sup {asterisk}}- related structure, and La{sub 1.85}Sr{sub 1.15}Cu{sub 2}O{sub 6.25}, having a structure related to that of the newly discovered double-layer superconductor La{sub 2-x}Sr{sub x}CaCu{sub 2}O{sub 6}. The role played by oxygen defects in determining the superconducting properties of layered cuprates is discussed. 16 refs., 2 figs.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6614880
• Report Number(s): CONF-900813-1; ON: DE90017669; CNN: STC-88-09854
• Conference Information: International conference on the chemistry of electronic ceramic materials, Grand Teton National Park, WY (USA), 16-21 Aug 1990
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DIFFRACTION
DYSPROSIUM COMPOUNDS
DYSPROSIUM OXIDES
FLUORINE COMPOUNDS
HALOGEN COMPOUNDS
HIGH-TC SUPERCONDUCTORS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
NEUTRON DIFFRACTION
OXIDES
OXYGEN COMPOUNDS
PARTIAL PRESSURE
RARE EARTH COMPOUNDS
SCATTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS