# Detailed and high-throughput measurement of composition dependence of magnetoresistance and spin–transfer torque using a composition-gradient film: application to CoxFe1-x (0 ≤ x ≤ 1) system

https://mdr.nims.go.jp/datasets/ccb7f8fe-b70f-472e-a545-6428f1cd3a22

## File

- [STAM_2023_Detailed and high-throughput measurement of composition dependence of magnetoresistance and spin transfer torque using a composition-gradient film.pdf](https://mdr.nims.go.jp/filesets/df88d8f7-ad58-4053-ad67-98bd1346ae86/download) ([Detail](https://mdr.nims.go.jp/filesets/df88d8f7-ad58-4053-ad67-98bd1346ae86.md))

## Id

ccb7f8fe-b70f-472e-a545-6428f1cd3a22

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-12-27T08:05:15.070895Z

## Updated at

2024-01-05T13:13:25.537818Z

## Published at

2023-12-28T03:30:17.946101Z

## Doi



## First published url

https://doi.org/10.1080/27660400.2023.2286944

## Date published

2023-12-31

## Recorded date published

2023-12-31

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: 'Detailed and high-throughput measurement of composition dependence of magnetoresistance
    and spin–transfer torque using a composition-gradient film: application to CoxFe1-x
    (0 ≤ x ≤ 1) system'
  title_type: original
  lang: en

## Description

- description: We develop a high-throughput method for measuring the composition dependence
    of magnetoresistance (MR) and spin-transfer-torque (STT) effects in current-perpendicular-to-plane
    giant magnetoresistance (CPP-GMR) devices and report its application to the CoFe
    system. The method is based on the use of composition-gradient films deposited
    by combinatorial sputtering. This structure allows the fabrication of devices
    with different compositions on a single substrate, drastically enhancing the throughput
    in investigating composition dependence. We fabricated CPP-GMR devices on a single
    GMR film consisting of a CoxFe1-x (0 ≤ x ≤ 1) composition-gradient layer, a Cu
    spacer layer, and a NiFe layer. The MR ratio obtained from resistance-field measurements
    exhibited the maximum in the broad Co concentration range of 0.3 ≤ x ≤ 0.65. In
    addition, the STT efficiency was estimated from the current to induce magnetization
    reversal of the NiFe layer by spin injection from the CoxFe1-x layer. The STT
    efficiency was also the highest around the same Co concentration range as for
    the MR ratio, and this correlation was theoretically explained by the change in
    the spin polarization of the CoxFe1-x layer. The results revealed the CoxFe1-x
    composition range suitable for spintronic applications, demonstrating the advantages
    of the developed method.
  description_type: abstract
  lang: eng

## Creator

- name: Vineet Barwal
  role: author
  organization: National Institute for Materials Science
- name: Hirofumi Suto
  role: author
  orcid: https://orcid.org/0000-0003-4387-5862
  organization: National Institute for Materials Science
- name: Tomohiro Taniguchi
  role: author
- name: Yuya Sakuraba
  role: author
  orcid: https://orcid.org/0000-0003-4618-9550
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Informa UK Limited

## Managing organization



## Keyword

- subject: magnetoresistance
  schema: not_defined
- subject: spin-transfer torque
  schema: not_defined
- subject: Co-Fe system
  schema: not_defined
- subject: composition-gradient film
  schema: not_defined
- subject: high-throughput measurement
  schema: not_defined
- subject: combinatorial sputtering
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: 'Science and Technology of Advanced Materials: Methods'
  issn: '27660400'
  volume: '3'
  issue: '1'
  start_page: 2286944
  end_page: 2286944

## Conference



## Related item



## Funding

- funder_name: Advanced Storage Research Consortium (ASRC)
- identifier: 21K20434
  funder_name: JSPS KAKENHI
- identifier: JPMJCR21O1
  funder_name: 'JST CREST '
- identifier: JPJ011438
  funder_name: 'MEXT Initiative to Establish Next-generation Novel Integrated Circuits
    Centers (X-NICS) '

## 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



## Software



## Custom property



## Fileset

- id: df88d8f7-ad58-4053-ad67-98bd1346ae86
  filename: STAM_2023_Detailed and high-throughput measurement of composition dependence
    of magnetoresistance and spin transfer torque using a composition-gradient film.pdf
  content_type: application/pdf
  size: 3618266
  md5: '020828847c5be549508e54e1d01dbdf9'

## Thumbnail

fileset_id: df88d8f7-ad58-4053-ad67-98bd1346ae86
filename: STAM_2023_Detailed and high-throughput measurement of composition dependence
  of magnetoresistance and spin transfer torque using a composition-gradient film.pdf