Published May 1997
| Version v1
Journal article
Relationships between the structural properties and the superconductivity in Y0.4Pr0.6Ba2-xSrxCu3O7-δ (x=0, 1.0)
- 1. Zhejiang Univ., Hangzhou (China). Dept. of Phys.
Description
The Y0.4Pr0.6Ba2-xSrxCu3O7-δ (x=0, 1.0) samples were prepared and the structural properties were studied by X-ray Rietveld analysis. It has been found that the average Pr-O bond length increases from 2.435 A at x=0 to 2.457 A at x=1.0, the Cu(2)-O-Cu(2) angles within the CuO2 planes become larger, and there is no significant mutual substitution between Pr and Sr ions. The BVS calculation suggests that Sr doping brings about the increase of the hole concentration on CuO2 planes and the weakening of Pr-O covalent mixing. Our work supports that Pr-O covalent mixing effect is responsible for the superconductivity suppression by Pr. (orig.)
Additional details
Publishing Information
- Journal Title
- Zeitschrift fuer Physik. B, Condensed Matter
- Journal Volume
- 103
- Journal Issue
- 1
- Journal Page Range
- p. 29-32.
- ISSN
- 0722-3277
- CODEN
- ZPCMDN
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 28056657
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BARIUM COMPOUNDS; BOND LENGTHS; CRYSTAL STRUCTURE; CUPRATES; HIGH-TC SUPERCONDUCTORS; PRASEODYMIUM COMPOUNDS; STOICHIOMETRY; STRONTIUM COMPOUNDS; TRANSITION TEMPERATURE; X-RAY DIFFRACTION; YTTRIUM COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; COHERENT SCATTERING; COPPER COMPOUNDS; DIFFRACTION; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SCATTERING; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS