Structure and oxygen stoichiometry in Ln sub 2-x Sr sub 1+x Cu sub 2 O sub 6-y (Ln = La, Nd, Sm) phases

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

DOI:https://doi.org/10.1016/S0022-4596(05)80064-7· OSTI ID:6862278

Grasmeder, J R; Weller, M T ^[1]

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1. The University, Southampton (England)

The structures of two new complex copper oxide phases refined from powder neutron diffraction data are reported. LaNdSrCu{sub 2}O{sub 6} is isostructural with La{sub 2}SrCu{sub 2}O{sub 6} but shows an unusual ordering of Nd and La over the perovskite-type A sites. Nd{sub 1.4}Sr{sub 1.6}Cu{sub 2}O{sub 5.79} has a structure based on a tripled (a {times} 3a {times} c). The lattice parameters and oxygen stoichiometries of a number of new phases of both structure types are presented.

• OSTI ID: 6862278
• Journal Information: Journal of Solid State Chemistry; (USA), Vol. 85:1; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER OXIDES
CRYSTAL STRUCTURE
STOICHIOMETRY
LANTHANUM COMPOUNDS
STRONTIUM COMPOUNDS
SUPERCONDUCTING COMPOSITES
DATA ANALYSIS
EXPERIMENTAL DATA
MEASURING INSTRUMENTS
MEASURING METHODS
NEODYMIUM
NEUTRON DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COMPOSITE MATERIALS
COPPER COMPOUNDS
DATA
DIFFRACTION
ELEMENTS
INFORMATION
MATERIALS
METALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
RARE EARTHS
SCATTERING
TRANSITION ELEMENT COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies