Published March 10, 1994
| Version v1
Journal article
Structure analysis of Gd2CuO4: a new modification of the T' phase
Creators
- 1. Kernforschungszentrum Karlsruhe GmbH (Germany). Inst. fuer Nukleare Festkoerperphysik
- 2. Laboratoire Leon Brillouin, Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)
- 3. Marburg Univ. (Germany). Fachbereich Chemie
- 4. Laboratoire Leon Brillouin, Centre d'Etudes Nucleaires de Saclay, 91 -Gif-sur-Yvette (France)
Description
Neutron diffraction on a single crystal of Gd2CuO4 shows a long-range superstructure of the T' phase. The oxygen squares surrounding the Cu sites are rotated around the c-axis (by an angle of 5.2 at room temperature) leading to a reduced orthorhombic symmetry (space group: Acam). The reported structural deformation can explain previous results (weak ferromagnetism and Moessbauer effect) and might help to explain the non-existence of superconductivity in Gd2-xCecCuO4. (orig.)
Additional details
Publishing Information
- Journal Title
- Europhysics Letters
- Journal Volume
- 25
- Journal Issue
- 8
- Journal Page Range
- p. 625-630.
- ISSN
- 0295-5075
- CODEN
- EULEEJ
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 25051512
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BOND ANGLE; BOND LENGTHS; COPPER OXIDES; CRYSTAL STRUCTURE; DEFORMATION; GADOLINIUM OXIDES; LATTICE PARAMETERS; NEUTRON DIFFRACTION; ORTHORHOMBIC LATTICES; ROTATION; SPACE GROUPS
- Descriptors DEC
- CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTAL LATTICES; DIFFRACTION; GADOLINIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; SCATTERING; SYMMETRY GROUPS; TRANSITION ELEMENT COMPOUNDS