Published 1990
| Version v1
Book
Structural aspects of the phase separation in La2CuO4.032
Creators
- 1. Lab. de Cristallographie, CNRS, 38042 Grenoble Cedex (France)
- 2. Los Alamos National Lab., NM (United States)
- 3. AT and T Bell Labs., Murray Hill, NJ (United States)
- 4. Sandia National Labs., Albuquerque, NM (United States)
Description
This paper reports on the average structure of superconducting La2CuO4.032 determined by single crystal neutron diffraction data. The excess oxygen is located between two adjacent LaO layers. Its presence distorts the apical-oxygen sublattice in such a way that a short O-O bond is formed (1.64 angstrom). By scanning several hkl reflexions; we have confirmed that a phase separation occurs below room temperature. The peaks of the phases are in agreement with the unit cells proposed by Jorgensen et al. and Zolliker et al. However, Cmca seems to be the correct space group for both phases. La2CuO4+δ and the Ni counterpart, thus, not isostructural
Additional details
Publishing Information
- Publisher
- Materials Research Society.
- Imprint Place
- Pittsburgh, PA (United States)
- ISBN
- 1-55899-057-7
- Imprint Title
- High-temperature superconductors: Fundamental properties and novel materials processing
- Imprint Pagination
- 1322 p.
- Journal Page Range
- p. 47-52.
Conference
- Title
- Materials Research Society fall meeting.
- Dates
- 27 Nov - 2 Dec 1989.
- Place
- Boston, MA (United States).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 23024531
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- COPPER OXIDES; CRYSTAL STRUCTURE; CRYSTALLOGRAPHY; LANTHANUM COMPOUNDS; MONOCRYSTALS; NEUTRON DIFFRACTION; OXYGEN; PHASE DIAGRAMS; STOICHIOMETRY; SUPERCONDUCTIVITY
- Descriptors DEC
- CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTALS; DIAGRAMS; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTS; INFORMATION; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SCATTERING; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Secondary number(s)
- CONF-891119--.