Crystal structure of nonsuperconducting Pb sub 2 (Sr sub 0. 94 Nd sub 0. 06 ) sub 2 (Nd sub 0. 76 Sr sub 0. 24 )Cu sub 3 O sub 8

Journal Article · Mon Jan 01 00:00:00 EST 1990 · Journal of Solid State Chemistry; (USA)

DOI:https://doi.org/10.1016/0022-4596(90)90193-2· OSTI ID:6883339

Hayri, E A; Kvick, A ^[1]

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1. Brookhaven National Lab., Upton, NY (USA)

The crystal structure of Pb{sub 2}(Sr{sub 0.94}Nd{sub 0.06}){sub 2}(Nd{sub 0.76}Sr{sub 0.24})Cu{sub 3}O{sub 8} was determined by single crystal x-ray diffraction. The compound was found to be orthorhombic (Cmmm) with a = 5.437(3), b = 5.472(2), c = 15.797(7) {angstrom} and Z = 2. In the structure double layers of CuO square pyramids are separated by (Nd, Sr) oxygen deficient layers which are stacked between (PbO)-Cu-(PbO) slabs. The oxygen in the Pb planes is shifted toward a pair of Pb atoms resulting in an orthorhombic distortion of the tetragonal unit cell. The possibilities for modulations and superlattices are discussed as is the role of the PbO planes in superconductivity.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6883339
• Journal Information: Journal of Solid State Chemistry; (USA), Vol. 84:1; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER OXIDES
CRYSTAL STRUCTURE
DATA ANALYSIS
EXPERIMENTAL DATA
LEAD
MEASURING INSTRUMENTS
MEASURING METHODS
NEODYMIUM
ORTHORHOMBIC LATTICES
STRONTIUM
SUPERCONDUCTIVITY
X-RAY DIFFRACTION
ALKALINE EARTH METALS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
CRYSTAL LATTICES
DATA
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
INFORMATION
METALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTHS
SCATTERING
TRANSITION ELEMENT COMPOUNDS
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Cermets
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