Published May 28, 1987
| Version v1
Journal article
Structure and crystal chemistry of the high-Tsub(c) superconductor YBa2Cu3Osub(7-x)
- 1. Rutherford Appleton Lab., Chilton (UK)
Description
The paper presents high resolution neutron powder diffraction data on the high critical temperature superconductor YBa2Cu3Osub(7-0.15). Results are given for cation positions and the location of oxygen defects. The data reveal that the corner-linked CuO4 planar groups are connected not only as sheets in the a-b plane but also as chains parallel to the b-axis. The average copper valence is 2.23. From bond valence arguments it is inferred that the Cu2+ and Cu3+ ions preferentially occupy square, pyramidal and square planar sites respectively. Crystal chemical considerations suggest that these structural features may be involved in the superconducting mechanism. (U.K.)
Additional details
Publishing Information
- Journal Title
- Nature (London)
- Journal Volume
- 327
- Journal Issue
- 6120
- Series
- Nature (London).
- Journal Page Range
- 310-312
- ISSN
- 0028-0836
- CODEN
- NATUA
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- United Kingdom
- INIS RN
- 18082196
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BARIUM COMPOUNDS; CHEMICAL COMPOSITION; COPPER COMPOUNDS; CRYSTAL STRUCTURE; EXPERIMENTAL DATA; LOW TEMPERATURE; NEUTRON DIFFRACTION; OXYGEN; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SUPERCONDUCTIVITY; SUPERCONDUCTORS; VACANCIES; YTTRIUM COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; COHERENT SCATTERING; CRYSTAL DEFECTS; DATA; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTS; INFORMATION; NONMETALS; NUMERICAL DATA; POINT DEFECTS; SCATTERING; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- Letter-to-the-editor.