# Development of a Persistent Current Mode 9.39 T (400 MHz) LTS/Bi-2223 NMR Magnet With a Bi-2223 Superconducting Joint

https://mdr.nims.go.jp/datasets/caafb5c0-4056-423d-80ec-2343f5e79412

## File

- [manuscript_final.pdf](https://mdr.nims.go.jp/filesets/88422c5c-2436-44cd-8f8e-779c9c1437f7/download) ([Detail](https://mdr.nims.go.jp/filesets/88422c5c-2436-44cd-8f8e-779c9c1437f7.md))

## Id

caafb5c0-4056-423d-80ec-2343f5e79412

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-04-05T01:18:10.176174Z

## Updated at

2024-04-05T23:30:15.274407Z

## Published at

2024-04-05T23:30:15.771247Z

## Doi

https://doi.org/10.48505/nims.4470

## First published url

https://doi.org/10.1109/tasc.2022.3162795

## Date published

2022-03-28

## Recorded date published



## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Development of a Persistent Current Mode 9.39 T (400 MHz) LTS/Bi-2223 NMR
    Magnet With a Bi-2223 Superconducting Joint
  title_type: original
  lang: en

## Description

- description: 'We developed and operated a persistent current (PC) mode 9.39 T (400
    MHz for 1H NMR) LTS/Bi-2223 NMR magnet using a Bi-2223 insert coil with a superconducting
    joint. Firstly, we developed a basic joining procedure to achieve the superconducting
    joint for the high-strength Bi-2223 tape used for the insert coil. We applied
    this procedure to the coil. Secondly, a stand-alone PC mode operation test for
    the coil at 4.2 K was performed. No apparent field decay was observed owing to
    the superconducting joint. Finally, we installed the coil inside the LTS outer
    coil’s bore to form a PC mode LTS/Bi-2223 NMR magnet system. We successfully demonstrated
    a ~ 9.39 T PC mode operation on the magnet over 1500 h though the current of the
    insert coil was limited to 5 A. The field drift rate was as low as ~ 0.3 × 10^−3
    ppm/h. The joint resistance was estimated to be ~ 3 × 10^−13 Ω at 4.2 K, 0.26
    T. To our best knowledge, this is the first demonstration of superconducting joint
    that realized a PC mode LTS/Bi-2223 NMR magnet. '
  description_type: abstract
  lang: und

## Creator

- name: Y. Takeda
  role: author
  orcid: https://orcid.org/0000-0001-7217-9853
  organization: National Institute for Materials Science
- name: Y. Suetomi
  role: author
- name: U. Nakai
  role: author
- name: R. Piao
  role: author
- name: Y. Matsutake
  role: author
- name: T. Yagai
  role: author
- name: T. Motoki
  role: author
- name: J. Shimoyama
  role: author
- name: M. Hamada
  role: author
- name: K. Saito
  role: author
- name: Y. Yanagisawa
  role: author

## Contact agent



## Publisher

organization: Institute of Electrical and Electronics Engineers (IEEE)

## Managing organization



## Keyword

- subject: Persistent current
  schema: not_defined

## Rights

- description: "© 2022 IEEE.  Personal use of this material is permitted.  Permission
    from IEEE must be obtained for all other uses, in any current or future media,
    including reprinting/republishing this material for advertising or promotional
    purposes, creating new collective works, for resale or redistribution to servers
    or lists, or reuse of any copyrighted component of this work in other works."
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2022-03-28
end_date: 2024-03-28

## Journal

- title: IEEE Transactions on Applied Superconductivity
  issn: '10518223'
  volume: '32'
  issue: '6'
  start_page: 1
  end_page: 5
  article_number: '4301005'

## Conference



## Related item



## Funding

- identifier: JPMJMI17A2
  funder_name: JST-Mirai Program
- funder_name: Special Postdoctoral Researcher Program at RIKEN

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## Fileset

- id: 88422c5c-2436-44cd-8f8e-779c9c1437f7
  filename: manuscript_final.pdf
  content_type: application/pdf
  size: 492499
  md5: 84cecbcece51da286c817400c8c3e819

## Thumbnail

fileset_id: 88422c5c-2436-44cd-8f8e-779c9c1437f7
filename: manuscript_final.pdf