# Quantitative measurement of figure of merit for transverse thermoelectric conversion in <math display="inline">  <mi>Fe</mi>  <mo>/</mo>  <mi>Pt</mi></math> metallic multilayers

https://mdr.nims.go.jp/datasets/d661f74a-d76c-495b-9a9f-f981a202ef47

## File

- [ZT-FePt_rev_NIMS-MDR.pdf](https://mdr.nims.go.jp/filesets/232d6618-bb41-4853-b930-70c08a0f1610/download) ([Detail](https://mdr.nims.go.jp/filesets/232d6618-bb41-4853-b930-70c08a0f1610.md))

## Id

d661f74a-d76c-495b-9a9f-f981a202ef47

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-02-22T01:43:37.211111Z

## Updated at

2024-02-26T03:30:27.110009Z

## Published at

2024-02-26T03:30:27.172344Z

## Doi

https://doi.org/10.48505/nims.4409

## First published url

https://doi.org/10.1103/physrevapplied.21.024039

## Date published

2024-02-21

## Recorded date published

2024-2

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Quantitative measurement of figure of merit for transverse thermoelectric
    conversion in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"
    overflow="scroll"><mml:mi>Fe</mml:mi><mml:mo>/</mml:mo><mml:mi>Pt</mml:mi></mml:math>
    metallic multilayers
  title_type: original
  lang: en

## Description

- description: 'This study presents a measurement method for determining the figure
    of merit for transverse thermoelectric conversion (zT) in thin film forms. Leveraging
    the proposed methodology, we comprehensively investigate the transverse thermoelectric
    coefficient (S), in-plane electrical conductivity (σ), and out-of-plane thermal
    conductivity (κ) in epitaxial and polycrystalline Fe/Pt metallic multilayers.
    The κ values of multilayers with a number of stacking repetitions (N) of 200 are
    lower than those of FePt alloy films, indicating that the multilayer structure
    effectively contributes to the suppression of κxx. zT is found to increase with
    increasing N, which remarkably reflects the N-dependent enhancement of the ST
    values. Notably, S and σ are significantly larger in the epitaxial multilayers
    than those in the polycrystalline counterparts, whereas negligible differences
    in κ are observed between the epitaxial and polycrystalline multilayers. This
    discrepancy in σ and κ with respect to crystal growth is due to the different
    degree of anisotropy in electron transport between epitaxial and polycrystalline
    multilayers, and epitaxial growth can lead to an enhancement of zT in the multilayers.
    This study is the first demonstration in the evaluation of zT in thin film forms,
    and our proposed measurement technique reveals the transverse thermoelectric properties
    inherent to multilayers. '
  description_type: abstract
  lang: und

## Creator

- name: Takumi Yamazaki
  role: author
  orcid: https://orcid.org/0000-0001-5289-8615
- name: Takamasa Hirai
  role: author
  orcid: https://orcid.org/0000-0002-5577-8018
  organization: National Institute for Materials Science
- name: Takashi Yagi
  role: author
  orcid: https://orcid.org/0000-0002-2008-872X
- name: Yuichiro Yamashita
  role: author
  orcid: https://orcid.org/0000-0003-1376-0263
- name: Ken-ichi Uchida
  role: author
  orcid: https://orcid.org/0000-0001-7680-3051
  organization: National Institute for Materials Science
- name: Takeshi Seki
  role: author
  orcid: https://orcid.org/0000-0003-3195-7051
- name: Koki Takanashi
  role: author
  orcid: https://orcid.org/0000-0003-4813-4641

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: anomalous Nernst effect
  schema: not_defined
- subject: dimensionless figure of merit
  schema: not_defined
- subject: spin caloritronics
  schema: not_defined
- subject: time-domain thermoreflectance
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review Applied
  issn: '23317019'
  volume: '21'
  issue: '2'
  article_number: '024039'

## Conference



## Related item



## Funding

- identifier: " JP18H05246"
  funder_name: JSPS
  description: 'Grant-in-Aid for Scientific Research (S) '
- identifier: JP22H04965
  funder_name: JSPS
  description: 'Grant-in-Aid for Scientific Research (S) '
- identifier: JP22K20495
  funder_name: JSPS
  description: Grant-in-Aid for Research Activity Start-up
- identifier: JPMJCR17I1
  funder_name: JST
  description: "CREST \"Creation of Inno\x02vative Core Technologies for Nano-enabled
    Thermal Management\""
- identifier: JPMJER2201
  funder_name: JST
  description: ERATO "Magnetic Thermal Management Materials"
- identifier: JP22KJ0210
  funder_name: JSPS
  description: Research Fellowship for Young Scientists

## Instrument



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## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



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## Process for specimen treatment



## Computational method



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## Fileset

- id: 232d6618-bb41-4853-b930-70c08a0f1610
  filename: ZT-FePt_rev_NIMS-MDR.pdf
  content_type: application/pdf
  size: 1547316
  md5: ea8d206345f63f9d40220d424f1c7b47

## Thumbnail

fileset_id: 232d6618-bb41-4853-b930-70c08a0f1610
filename: ZT-FePt_rev_NIMS-MDR.pdf