# MgSiSn/Mg2Sn amorphous–crystalline nanocomposites with enhanced figure-of-merit performance for efficient thermoelectric conversion

https://mdr.nims.go.jp/datasets/51366987-0306-4753-bfa4-e8e9cfa6b611

## File

- [MgSiSn_Super_JPCS_07302025_rv1.pdf](https://mdr.nims.go.jp/filesets/b1bd9147-012c-4e25-a788-43a5f144baeb/download) ([Detail](https://mdr.nims.go.jp/filesets/b1bd9147-012c-4e25-a788-43a5f144baeb.md))

## Id

51366987-0306-4753-bfa4-e8e9cfa6b611

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-09-02T00:56:50.556773Z

## Updated at

2026-09-03T07:31:00.282197Z

## Published at

2026-09-03T07:28:50.666563Z

## Doi

https://doi.org/10.48505/nims.6502

## First published url

https://doi.org/10.1016/j.jpcs.2025.113143

## Date published

2025-08-29

## Recorded date published

2026-1

## Resource type

journal_article

## Manuscript type

authors_original

## Collection



## Title

- title: MgSiSn/Mg2Sn amorphous–crystalline nanocomposites with enhanced figure-of-merit
    performance for efficient thermoelectric conversion
  title_type: original
  lang: en

## Description

- description: "Thermoelectric conversion is emerging as an efficient method for transforming
    waste heat into electricity.\r\nApproximately 60 % of unrecovered waste heat is
    below 500 K, necessitating suitable materials. Bi2Te3-based compounds, widely
    commercialized for this purpose, exhibit a figure of merit (zT) of one near room
    temperature but are expensive and highly toxic. While less toxic and more abundant
    materials including Mg2Sn and Mg2Si are explored as alternatives, their zT values
    remain considerably low. For zT enhancement, Mg2SixSny nanocomposite thin films
    were fabricated using a combinatorial sputter coating system. Through interfacial
    engineering and nanocrystallization, this system produced multilayered (ML) Mg2Si
    and Sn structures that overcame the trade-off relationship among Seebeck coefficient,
    electrical conductivity, and thermal conductivity, achieving zT values of 0.021
    and 0.083 at room temperature and 520 K, respectively. ML samples were fabricated
    on flexible substrates for potential wearable thermoelectric applications. This
    zT-enhancement strategy can yield high-performance, ecofriendly thermoelectric
    thin films."
  description_type: abstract
  lang: und

## Creator

- name: Masahiro Goto
  role: author
  orcid: https://orcid.org/0000-0002-1003-2781
- name: Michiko Sasaki
  role: author
  orcid: https://orcid.org/0000-0002-2336-5788

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Thermoelectric
  schema: not_defined
- subject: Sputter
  schema: not_defined
- subject: Coating
  schema: not_defined
- subject: Thin film
  schema: not_defined
- subject: Combinatorial
  schema: not_defined
- subject: Magnesium silicide
  schema: not_defined
- subject: Flexible device
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Journal of Physics and Chemistry of Solids
  issn: '00223697'
  volume: '208'
  article_number: '113143'

## Conference



## Related item



## Funding

- identifier: JPMJCR16Q5
  funder_name: Core Research for Evolutional Science and Technology
- identifier: 24K07349
  funder_name: Core Research for Evolutional Science and Technology
- identifier: 25K08337
  funder_name: Core Research for Evolutional Science and Technology
- funder_name: Japan Society for the Promotion of Science
- funder_name: Japan Science and Technology Corporation
- identifier: JPMJCR21O2
  funder_name: Japan Science and Technology Agency

## 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: b1bd9147-012c-4e25-a788-43a5f144baeb
  filename: MgSiSn_Super_JPCS_07302025_rv1.pdf
  content_type: application/pdf
  size: 1342357
  md5: 879cc7d32b6083bac68a0dddc84666c7

## Thumbnail

fileset_id: b1bd9147-012c-4e25-a788-43a5f144baeb
filename: MgSiSn_Super_JPCS_07302025_rv1.pdf