Published July 2005 | Version v1
Journal article Metadata-only

A remarkable Tc-enhancement effect in Na-doped Y1-xNaxBa2Cu2.7Zn0.3O7-δ

Creators

  • 1. National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 (China)

Description

In this paper, the preparation, structure, oxygen content and superconductivity of Y1-xNaxBa2Cu2.7Zn0.3O7-δ samples were investigated by means of x-ray diffraction, iodine titration, resistance and magnetism measurements. In this system, a remarkable Tc-enhancement effect and an insulator to superconductor transition have been observed due to Na doping. The superconducting transition temperature Tc of the Y1-xNaxBa2Cu2.7Zn0.3O7-δ sample with x = 0.20 is enhanced to ∼60 K. The results for x-ray diffraction, lattice parameters, superconductivity and oxygen content indicate that the maximum substitution level of Na for Y in this system is x = 0.20, and Tc increases while oxygen content decreases with increasing Na content x

Availability note (English)

Available online at http://stacks.iop.org/0953-2048/18/1023/sust5_7_016.pdf or at the Web site for the journal Superconductor Science and Technology (ISSN 1361-6668) http://www.iop.org/

Additional details

Identifiers

URL
http://stacks.iop.org/0953-2048/18/1023/sust5_7_016.pdf; http://www.iop.org/;
DOI
10.1088/0953-2048/18/7/016;
PII
S0953-2048(05)98356-5;

Publishing Information

Journal Title
Superconductor Science and Technology
Journal Volume
18
Journal Issue
7
Journal Page Range
p. 1023-1027
ISSN
0953-2048
CODEN
SUSTEF

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36095792
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BARIUM COMPOUNDS; CUPRATES; DOPED MATERIALS; IODOMETRY; LATTICE PARAMETERS; MAGNETISM; OXYGEN; SODIUM COMPOUNDS; SUPERCONDUCTIVITY; SUPERCONDUCTORS; TEMPERATURE RANGE 0273-0400 K; TRANSITION TEMPERATURE; X-RAY DIFFRACTION; YTTRIUM COMPOUNDS; ZINC COMPOUNDS
Descriptors DEC
ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; CHEMICAL ANALYSIS; COHERENT SCATTERING; COPPER COMPOUNDS; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTS; MATERIALS; NONMETALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; QUANTITATIVE CHEMICAL ANALYSIS; SCATTERING; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TITRATION; TRANSITION ELEMENT COMPOUNDS; VOLUMETRIC ANALYSIS