Published December 1, 1987
| Version v1
Journal article
Local distortions and reduction in T/sub c/ in the ceramic superconductor La/sub 1.8/Sr/sub 0.2/Cu/sub 1-//sub x/Ag/sub x/O4
Creators
- 1. Advanced Centre for Research in Electronics, Indian Institute of Technology, Bombay 400076, India
Description
Substitution of Ag for Cu in the high-T/sub c/ ceramic superconductor La/sub 1.8/Sr/sub 0.2/CuO4 has been found to reduce T/sub c/. The infrared absorption spectra of these superconducting systems show that the vibrational mode, which disappears at x∼0.15 for La/sub 2-//sub x/Sr/sub x/CuO4 appears at a reduced frequency in the Ag-substituted systems. It is argued that the local distortions around the Ag sites result in both the reduction of T/sub c/ as well as the appearance of the absorption peak at 630 cm/sup -1/
Additional details
Publishing Information
- Journal Title
- Phys. Rev., B: Condens. Matter
- Journal Volume
- 36
- Journal Issue
- 16
- Series
- Phys. Rev., B: Condens. Matter.
- Journal Page Range
- 8918-8920
- ISSN
- 0163-1829
- CODEN
- PRBMD
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 19040115
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ABSORPTION SPECTRA; CERAMICS; COPPER OXIDES; INFRARED SPECTRA; LANTHANUM OXIDES; OSCILLATION MODES; SILVER ADDITIONS; STRONTIUM OXIDES; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; LANTHANUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SCATTERING; SPECTRA; STRONTIUM COMPOUNDS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS