Published November 2021 | Version v1
Journal article Metadata-only

Superconducting joints using multifilament MgB2 wires for MRI application

Creators

  • 1. National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan)
  • 2. School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, Queensland 4067 (Australia)
  • 3. Department of Electrical Engineering, Kangwon National University, Kangwon 25913 (Korea, Republic of)
  • 4. Department of Electrical Engineering, Kyungpook National University, Daegu 41566 (Korea, Republic of)
  • 5. JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
  • 6. Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, St Lucia, Queensland 4072 (Australia)
  • 7. Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong, New South Wales 2500 (Australia)

Description

We present superconducting joints using 36 filaments magnesium diboride (MgB2) wires in continuation joint orientation and their characterisation results for the first time. One of the joints demonstrated the critical temperature (offset) of 34.4 K and the critical current (Ic) of 38.5 A at 10 K in self-field. Unconventional Ic behaviour of the joint was observed at 20 K in self-field when the Ic was measured in a high to a low field due to the effect of field trapping in the MgB2 bulk within the joint. Elemental mapping at the interface between the MgB2 bulk and the filament revealed oxidation, which was attributed to being responsible for reducing the Ic of the joint. This work will notably contribute towards MgB2 superconducting joint technology development for magnetic resonance imaging (MRI) application.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.scriptamat.2021.114156

Additional details

Identifiers

DOI
10.1016/j.scriptamat.2021.114156;
PII
S135964622100436X;

Publishing Information

Journal Title
Scripta Materialia
Journal Volume
204
Journal Page Range
vp.
ISSN
1359-6462
CODEN
SCMAF7

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
53123270
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
Descriptors DEI
CRITICAL CURRENT; CRITICAL TEMPERATURE; FILAMENTS; MAGNESIUM BORIDES; MAGNETIC RESONANCE; NMR IMAGING; OXIDATION
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BORIDES; BORON COMPOUNDS; CHEMICAL REACTIONS; CURRENTS; DIAGNOSTIC TECHNIQUES; ELECTRIC CURRENTS; MAGNESIUM COMPOUNDS; PHYSICAL PROPERTIES; RESONANCE; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE

Optional Information

Copyright
Copyright (c) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.