Published May 1, 1987
| Version v1
Journal article
Crystallographic description of phases in the Y-Ba-Cu-O superconductor
Creators
- 1. Geophysical Laboratory, Carnegie Institution of Washington, 2801 Upton Street NW, Washington, D.C. 20008
Description
Single-crystal x-ray techniques were used to determine two structures that comprise the Y-Ba-Cu-O superconductor. A green phase has the orthorhombic Y2BaCuO5 structure. An opaque phase (YBa2Cu3O/sub 6+//sub x/, 0≤x≤1.0) is tetragonal (a = 3.859 A, c = 11.71 A; space group P4-barm2;Z = 1). The structure is related to a 1:1:3 ABO3 perovskite: Ba and Y order in A sites and Cu is in B sites. Systematic oxygen vacancies between adjacent copper atoms lead to a fivefold-coordinate Cu in proximity to Y and a twofold-coordinate Cu in the vicinity of the Ba site
Additional details
Publishing Information
- Journal Title
- Phys. Rev., B: Condens. Matter
- Journal Volume
- 35
- Journal Issue
- 13
- Series
- Phys. Rev., B: Condens. Matter.
- Journal Page Range
- 7238-7241
- ISSN
- 0163-1829
- CODEN
- PRBMD
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 18064475
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; CRYSTAL STRUCTURE; MONOCRYSTALS; SUPERCONDUCTORS; VACANCIES; X-RAY DIFFRACTION; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTAL DEFECTS; CRYSTALS; DIFFRACTION; OXIDES; OXYGEN COMPOUNDS; POINT DEFECTS; SCATTERING; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS