# Angular dependence of resistance and critical current of a Bi-2223 superconducting joint

https://mdr.nims.go.jp/datasets/311b6c0f-ff9d-4460-b62e-5f8c6871dcab

## File

- [Takeda_2023_Supercond._Sci._Technol._36_125010.pdf](https://mdr.nims.go.jp/filesets/50604e0e-1bdf-4ed5-89b7-9bee11bc8dd6/download) ([Detail](https://mdr.nims.go.jp/filesets/50604e0e-1bdf-4ed5-89b7-9bee11bc8dd6.md))

## Id

311b6c0f-ff9d-4460-b62e-5f8c6871dcab

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-04-04T09:48:48.882596Z

## Updated at

2024-04-05T03:30:29.256195Z

## Published at

2024-04-05T03:30:29.325279Z

## Doi



## First published url

https://doi.org/10.1088/1361-6668/ad0565

## Date published

2023-12-01

## Recorded date published

2023-12-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Angular dependence of resistance and critical current of a Bi-2223 superconducting
    joint
  title_type: original
  lang: en

## Description

- description: 'Low resistance and high critical current are prerequisites for superconducting
    joints used in persistent-mode magnets. Herein, we use a joint resistance evaluation
    system, previously developed by us, to systematically evaluate the angular dependence
    of resistance and critical current of a Bi-2223 superconducting joint in a closed-loop
    sample. The current decay is measured by rotating the sample incrementally. The
    time dependence of the loop current is evaluated at 4 K, 0.15–0.28 T, and magnetic
    field angles ranging from 90° to 0, wherein 90° corresponds to the direction parallel
    to the tape surface. The results suggest that the resistance and critical current
    of the joint depend on the angle of the magnetic field. The evaluated critical
    current increases as the angle increases. The angular dependence of resistance
    can be divided into three regions: low-resistance, transition, and high-resistance
    regions. The low-resistance region exists at high angles close to 90°. In this
    region, the decay of the loop current is small, and the persistent current continues
    to flow. Furthermore, the joint resistance is less than 1.4 × 10^−13 Ω. In the
    transition region, the joint resistance significantly increases by three orders
    of magnitude with sample rotation. This significant increase is attributed to
    an increase in the perpendicular component of the magnetic field, which decreases
    the critical current of the joint. At lower angles, the joint resistance remains
    high, ranging from 10^−11 to 10^−10 Ω. A significant decay in the loop current
    is observed in the high-resistance region. Based on these findings, we conclude
    that the design of a persistent-mode magnet must consider not only the magnitude
    but also the direction of the magnetic field applied to superconducting joints.'
  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: G Nishijima
  role: author
  orcid: https://orcid.org/0000-0001-7493-0559
  organization: National Institute for Materials Science
- name: U Nakai
  role: author
- name: T Motoki
  role: author
- name: J Shimoyama
  role: author
- name: H Kitaguchi
  role: author
  orcid: https://orcid.org/0000-0002-5998-2649
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: IOP Publishing

## Managing organization



## Keyword

- subject: Superconducting joint
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Superconductor Science and Technology
  issn: '13616668'
  volume: '36'
  issue: '12'
  article_number: '125010'

## Conference



## Related item



## Funding

- identifier: JPMJMI17A2
  funder_name: JST-Mirai Program
- identifier: JP22K14482
  funder_name: Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



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## Custom property



## Fileset

- id: 50604e0e-1bdf-4ed5-89b7-9bee11bc8dd6
  filename: Takeda_2023_Supercond._Sci._Technol._36_125010.pdf
  content_type: application/pdf
  size: 1283887
  md5: d20b016c8cc8108a36e4f00e006c0ef9

## Thumbnail

fileset_id: 50604e0e-1bdf-4ed5-89b7-9bee11bc8dd6
filename: Takeda_2023_Supercond._Sci._Technol._36_125010.pdf