Published September 15, 2014 | Version v1
Journal article Metadata-only

Effects of high-pressure annealing on critical current density in 1 2 2 type iron pnictide wires

Creators

  • 1. Department of Applied Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8656 (Japan)
  • 2. Fusion Research and Development Directorate, Japan Atomic Energy Agency (JAEA), Ibaraki 319-1195 (Japan)

Description

Highlights: • (AE, K)Fe2As2 (AE: Ba, Sr) superconducting wires were prepared under high pressure. • The transport Jcs have reached 37 and 48 kA/cm2 under self-field. • Large intergranular Jc in the wire cores were confirmed by magneto optical imaging. • Couplings between superconducting grains were improved by high pressure annealing. - Abstract: We have fabricated (Ba,K)Fe2As2 and (Sr,K)Fe2As2 superconducting wires through an powder-in-tube (PIT) method using hot isostatic pressing (HIP) technique. The transport critical current densities (Jc) have reached 37 kA/cm2 and 48 kA/cm2 under self-field, and 3.0 kA/cm2 and 1.8 kA/cm2 under magnetic field of 90 kOe, at 4.2 K in the (Ba,K)Fe2As2 and (Sr,K)Fe2As2 wire, respectively. Magneto-optical (MO) imaging of the wires confirmed the large intergranular Jc in the wire core due to the improvement of couplings between superconducting grains by high-pressure annealing

Availability note (English)

Available from http://dx.doi.org/10.1016/j.physc.2014.03.008

Additional details

Identifiers

DOI
10.1016/j.physc.2014.03.008;
PII
S0921-4534(14)00068-9;

Publishing Information

Journal Title
Physica. C, Superconductivity
Journal Volume
504
Journal Page Range
p. 69-72
ISSN
0921-4534
CODEN
PHYCE6

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46120805
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ANNEALING; COUPLINGS; CRITICAL CURRENT; CURRENT DENSITY; HOT PRESSING; IRON; IRON ARSENIDES; MAGNETIC FIELDS; POWDERS; PRESSURE DEPENDENCE; SPECTROSCOPY; SUPERCONDUCTING WIRES; SUPERCONDUCTIVITY
Descriptors DEC
ARSENIC COMPOUNDS; ARSENIDES; CURRENTS; ELECTRIC CONDUCTIVITY; ELECTRIC CURRENTS; ELECTRICAL PROPERTIES; ELEMENTS; FABRICATION; HEAT TREATMENTS; IRON COMPOUNDS; MATERIALS WORKING; METALS; PHYSICAL PROPERTIES; PNICTIDES; PRESSING; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; WIRES

Optional Information

Copyright
Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.