Systematic investigation of a NbTi-Bi2223 hybrid low-resistive joint
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Published:2023-06-08
Issue:7
Volume:36
Page:075011
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ISSN:0953-2048
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Container-title:Superconductor Science and Technology
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language:
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Short-container-title:Supercond. Sci. Technol.
Author:
Sun WanshuoORCID,
Wang Yaohui,
Zhang ZiliORCID,
Zhang Xiaolong,
Wang Lei,
Cheng Junsheng,
Suo Hongli,
Wang QiuliangORCID
Abstract
Abstract
In this study, a NbTi-Bi2223 hybrid low-resistive joint fabricated by the superconducting solder method was systematically investigated. The joint is a necessary component of gigahertz nuclear magnetic resonance (NMR) with Bi2223 as the insert coil. The joint resistance and current capability under different applied magnetic fields were measured, and the resistance exhibited a near-linear relationship with the applied field. Beyond the superconducting properties, the allowed mechanical criteria for the Bi2223 tape in the joint were also briefly studied. Based on the above two properties, a 1.3 GHz NMR design with a NbTi-Bi2223 hybrid low-resistive joint was shown as an application demonstration. Although the current resistance can fit the magnetic-field decay criteria, obtaining a lower resistance value was attempted by extending the joint length but failed. The main source of the resistance in NbTi-Bi2223 was studied. We attempt to show an engineering-feasible NbTi-Bi2223 hybrid low-resistive joint to help improve the development of gigahertz NMR.
Funder
Major Program
National Natural Science Foundation of China
Key R&D Program of China
Beijing Municipal Natural Science Foundation
Subject
Materials Chemistry,Electrical and Electronic Engineering,Metals and Alloys,Condensed Matter Physics,Ceramics and Composites
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