# The effect of intermediate layer densification on the critical current of a Bi-2223 superconducting joint

https://mdr.nims.go.jp/datasets/46ef4499-8087-49f6-bc26-7141379a5d7a

## File

- [Takeda_2023_Supercond._Sci._Technol._36_035004.pdf](https://mdr.nims.go.jp/filesets/17dfd594-bd2b-451d-ad6c-8262988e9ba2/download) ([Detail](https://mdr.nims.go.jp/filesets/17dfd594-bd2b-451d-ad6c-8262988e9ba2.md))

## Id

46ef4499-8087-49f6-bc26-7141379a5d7a

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-04-04T10:03:02.235809Z

## Updated at

2024-04-05T07:30:28.271970Z

## Published at

2024-04-05T07:30:28.382882Z

## Doi



## First published url

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

## Date published

2023-03-01

## Recorded date published

2023-3-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: The effect of intermediate layer densification on the critical current of
    a Bi-2223 superconducting joint
  title_type: original
  lang: en

## Description

- description: The effect of intermediate layer densification on the critical current
    (Ic) of Bi-2223 superconducting joints was quantitatively studied. First, we evaluated
    the phase purity, density, and intergrain critical current density (Jc) of Bi-2223
    thick film samples simulating the intermediate layer. The samples were uniaxially
    pressed to increase the film density. After two heat treatments of the pressed
    film, an increase in Jc by the densification was achieved. Second, we fabricated
    superconducting joints by synthesizing an intermediate layer between two Bi-2223
    tapes. Applying a uniform uniaxial pressure on the joint resulted in the formation
    of a homogenous structure. This process enables the reproducible fabrication of
    superconducting joints with high n values. The Ic of the superconducting joint
    was increased by intermediate pressing and two heat treatments. However, pressing
    at high pressures can mechanically damage filaments in the Bi-2223 tapes, leading
    to a decrease in Ic. Sample characterization showed that the optimum intermediate
    pressing pressure range to produce high Ic was 1.5–2 × 10^8 Pa. We confirmed that
    pressing densified the intermediate layer of the superconducting joints. Our experimental
    results and analyses reveal that densification of the intermediate layer increases
    the Ic of Bi-2223 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: K Inoue
  role: author
  organization: National Institute for Materials Science
- name: Y Takano
  role: author
  orcid: https://orcid.org/0000-0002-1541-6928
  organization: National Institute for Materials Science
- 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'
  article_number: '035004'

## Conference



## Related item



## Funding

- identifier: JPMJMI17A2
  funder_name: Japan Science and Technology Agency
- identifier: 22K14482
  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



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## Process for specimen treatment



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## Fileset

- id: 17dfd594-bd2b-451d-ad6c-8262988e9ba2
  filename: Takeda_2023_Supercond._Sci._Technol._36_035004.pdf
  content_type: application/pdf
  size: 3289292
  md5: 5ddd27467fe509f49b348f888b13a953

## Thumbnail

fileset_id: 17dfd594-bd2b-451d-ad6c-8262988e9ba2
filename: Takeda_2023_Supercond._Sci._Technol._36_035004.pdf