Published 1990 | Version v1
Book Metadata-only

Neutron powder diffraction study of the structures of La1.9Ca1.1Cu2O6 and La1.9Sr1.1Cu2O6+δ

Creators

  • 1. National Institute of Standards and Technology, Reactor Division, Gaithersburg, MD (USA)
  • 2. Bell Lab., Murray Hill, NJ (USA)

Description

The title compounds are structurally isomorphous and crystallize with the symmetry of space group 14/mmm. The lattice parameters are a = 3.8248(1), c = 19.4286(5) Angstrom for La1.9Sr1.1Cu2O6+δ and a = 3.8601(1), c = 19.9994(5) Angstrom for La1.9Sr1.1Cu2O6+δ. The structure can be easily derived from that of La2CuO4 by substituting the layers of composition CuO2 present in La2CuO4 with a block of three layers having composition and sequence (CuO2)-(R)-(CuO2), where R is Ca, Sr, and/or La. Although the general structural configuration is the same for the Ca and the Sr compounds, the distribution of the metal atoms is different in the two cases

Additional details

Publishing Information

Publisher
Materials Research Society.
Imprint Place
Pittsburgh, PA (USA)
ISBN
1-55899-054-2
Imprint Title
Neutron scattering for materials science
Imprint Pagination
499 p.
Journal Page Range
p. 187-192.

Conference

Title
Materials Research Society fall meeting.
Dates
27 Nov - 2 Dec 1989.
Place
Boston, MA (USA).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
22007906
Subject category
S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CALCIUM OXIDES; CHEMICAL COMPOSITION; COPPER OXIDES; HIGH-TC SUPERCONDUCTORS; LANTHANUM OXIDES; LATTICE PARAMETERS; NEUTRON DIFFRACTION; PEROVSKITE; POWDERS; STRONTIUM OXIDES; SUPERCONDUCTIVITY
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; LANTHANUM COMPOUNDS; MINERALS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SCATTERING; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Secondary number(s)
CONF-891119--.