Published June 2002
| Version v1
Journal article
Preparation, structure and superconductivity of La2-xSrxCaCu2O4Cl2 and La1.8-xSr0.2Ca1+xCu2O4Cl2 superconductors synthesized at ambient pressure
- 1. National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing (China)
- 2. National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing (CN)
Description
Copper oxy-chloride superconductors La2-xSrxCaCu2O4Cl2 and La1.8-xSr0.2Ca1+xCu2O4Cl2 have been prepared at ambient pressure using the traditional solid state reaction method. The structure of these superconductors belongs to that of 212 cuprate superconductors, with lattice parameters a∼3.83 A and c∼19 A, and the space group I4/mmm. The highest Tc obtained was 45 K when x=0.35-0.40 in the La2-xSrxCaCu2O4Cl2 system. The carrier concentration in these materials is controlled not only by cation substitution but also by anion substitution. (author)
Availability note (English)
Available online at the Web site for the journal Superconductor Science and Technology (ISSN 1361-6668) http://www.iop.org/Additional details
Identifiers
- URL
- http://www.iop.org/;
Publishing Information
- Journal Title
- Superconductor Science and Technology
- Journal Volume
- 15
- Journal Issue
- 6
- Journal Page Range
- p. 875-880
- ISSN
- 0953-2048
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 33021116
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CALCIUM OXIDES; CARRIER DENSITY; CUPRATES; HIGH-TC SUPERCONDUCTORS; LANTHANUM OXIDES; OXYCHLORIDES; STRONTIUM OXIDES; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; CHLORINE COMPOUNDS; COPPER COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; HALOGEN COMPOUNDS; LANTHANUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; OXYHALIDES; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TYPE-II SUPERCONDUCTORS