Strain Analysis of Thermoelectric Materials Using High-resolution Synchrotron X-ray Diffraction Data
A compressive strength limit is one of critical parameters for thermoelectric materials. In this study, we synthesized a single crystal of Yb-filled Co–Sb based skutterudite. We assessed the compressive pressure dependence of internal strain using high-resolution synchrotron radiation X-rays at SPring-8. The prepared single crystal was identified as Yb0.148Co4Sb12.54, with a lattice parameter of 9.0504 Å. Compressive testing was performed until the sample fractured, revealing a compressive strength limit of 591.3 MPa. The stress–strain curve exhibited a nearly constant slope for strains exceeding 0.07%, leading to an estimated Young’s modulus of 154.6 GPa.
Authors
- Hayato Nakasawa (ORCID: https://orcid.org/0000-0003-3856-7101)
- Masashi Fujii (ORCID: https://orcid.org/0000-0002-1586-6435)
- Makoto Tachibana (ORCID: https://orcid.org/0000-0002-5907-5563)
- Naohito Tsujii (ORCID: https://orcid.org/0000-0002-6181-5911)
- Takahisa Shobu (ORCID: https://orcid.org/0000-0002-6126-518X)
- Vikrant Trivedi (ORCID: https://orcid.org/0000-0002-6999-5646)
- Takeshi Shimada (ORCID: https://orcid.org/0000-0001-5565-2215)
- Takao Mori (ORCID: https://orcid.org/0000-0003-2682-1846)
- Aki Tominaga (ORCID: https://orcid.org/0000-0002-0556-2526)
- Michiko Matsuda
- Hironari Mstsumoto
Institutions
- Japan Atomic Energy Agency (JP)
- National Institute for Materials Science (JP)
- Innovative Research (United States) (US)
Publication Details
- Journal
- Journal of the Japan Society of Powder and Powder Metallurgy
- Published
- 2025-03-14
- DOI
- https://doi.org/10.2497/jjspm.15p-t21-07
- Primary Topic
- Advanced Thermoelectric Materials and Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Japan Atomic Energy Agency
- JST-Mirai Program