Published June 2009 | Version v1
Journal article Metadata-only

Precision synthesis of infinite-layer (Sr,La)CuO2 superconductors

Creators

  • 1. Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503 (Japan)

Description

We report a new synthesis route to prepare high-quality samples of the infinite-layer (Sr1-xLax)CuO2 superconductor system. This route includes a reductive annealing of the Sr-La-Cu-O precursor prior to high-pressure synthesis of the infinite-layer phase. Careful optimization of synthesis parameters allows us to obtain single-phase (Sr1-xLax)CuO2 samples within the wide composition range of 0≤x≤0.125. It is revealed that the value of Tc(∼43 K) is nearly independent of x, whereas the superconductivity volume fraction exhibits a bell-shaped behavior with x, peaking at x∼0.10 with a record high value of 86%.

Availability note (English)

Available from http://dx.doi.org/10.1088/0953-2048/22/6/065004

Additional details

Identifiers

DOI
10.1088/0953-2048/22/6/065004;
PII
S0953-2048(09)08626-6;

Publishing Information

Journal Title
Superconductor Science and Technology
Journal Volume
22
Journal Issue
6
Journal Page Range
[4 p.]
ISSN
0953-2048
CODEN
SUSTEF

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41003736
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ANNEALING; COPPER OXIDES; LANTHANUM COMPOUNDS; LAYERS; OPTIMIZATION; STRONTIUM COMPOUNDS; SUPERCONDUCTIVITY; SUPERCONDUCTORS; SYNTHESIS
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; HEAT TREATMENTS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; TRANSITION ELEMENT COMPOUNDS