Mechanical and transport properties of thermoelectric Bi-doped Mg2SixGeySn1-x-y alloys

Meital Cahana; Yaniv Gelbstein

doi:10.1016/j.jallcom.2025.179592

Mechanical and transport properties of thermoelectric Bi-doped Mg₂Si_xGe_ySn_1-x-y alloys

Meital Cahana, Yaniv Gelbstein

Department of Materials Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The pursuit of sustainable energy solutions has led to increasing interest in thermoelectric (TE) technology for converting waste heat into electricity. Among TE materials, Mg₂(Si,Ge,Sn)-based alloys have emerged as promising candidates due to their favorable properties and potential applications. In this study, Bi-doped Mg₂Si_xGe_ySn_1-x-y alloys were synthesized and investigated for both TE and mechanical properties. The addition of Sn to both Mg₂Si- and Mg₂Ge-based alloys offers opportunities for optimizing TE properties. Experimental results revealed a reduction in fracture toughness and microhardness with increasing Sn content, consistent with previous findings. ZT values reach up to 1.06 for compositions with higher Sn content.

Original language	English
Article number	179592
Journal	Journal of Alloys and Compounds
Volume	1021
DOIs	https://doi.org/10.1016/j.jallcom.2025.179592
State	Published - 5 Apr 2025

Keywords

Electrical transport
Mechanical properties
Scanning electron microscopy, SEM
Thermoelectric
X-ray diffraction

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jallcom.2025.179592

Cite this

@article{36e0d8099c5d4d2f95ddd760e469e078,

title = "Mechanical and transport properties of thermoelectric Bi-doped Mg2SixGeySn1-x-y alloys",

abstract = "The pursuit of sustainable energy solutions has led to increasing interest in thermoelectric (TE) technology for converting waste heat into electricity. Among TE materials, Mg2(Si,Ge,Sn)-based alloys have emerged as promising candidates due to their favorable properties and potential applications. In this study, Bi-doped Mg2SixGeySn1-x-y alloys were synthesized and investigated for both TE and mechanical properties. The addition of Sn to both Mg2Si- and Mg2Ge-based alloys offers opportunities for optimizing TE properties. Experimental results revealed a reduction in fracture toughness and microhardness with increasing Sn content, consistent with previous findings. ZT values reach up to 1.06 for compositions with higher Sn content.",

keywords = "Electrical transport, Mechanical properties, Scanning electron microscopy, SEM, Thermoelectric, X-ray diffraction",

author = "Meital Cahana and Yaniv Gelbstein",

note = "Publisher Copyright: {\textcopyright} 2025 Elsevier B.V.",

year = "2025",

month = apr,

day = "5",

doi = "10.1016/j.jallcom.2025.179592",

language = "English",

volume = "1021",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Mechanical and transport properties of thermoelectric Bi-doped Mg2SixGeySn1-x-y alloys

AU - Cahana, Meital

AU - Gelbstein, Yaniv

PY - 2025/4/5

Y1 - 2025/4/5

N2 - The pursuit of sustainable energy solutions has led to increasing interest in thermoelectric (TE) technology for converting waste heat into electricity. Among TE materials, Mg2(Si,Ge,Sn)-based alloys have emerged as promising candidates due to their favorable properties and potential applications. In this study, Bi-doped Mg2SixGeySn1-x-y alloys were synthesized and investigated for both TE and mechanical properties. The addition of Sn to both Mg2Si- and Mg2Ge-based alloys offers opportunities for optimizing TE properties. Experimental results revealed a reduction in fracture toughness and microhardness with increasing Sn content, consistent with previous findings. ZT values reach up to 1.06 for compositions with higher Sn content.

AB - The pursuit of sustainable energy solutions has led to increasing interest in thermoelectric (TE) technology for converting waste heat into electricity. Among TE materials, Mg2(Si,Ge,Sn)-based alloys have emerged as promising candidates due to their favorable properties and potential applications. In this study, Bi-doped Mg2SixGeySn1-x-y alloys were synthesized and investigated for both TE and mechanical properties. The addition of Sn to both Mg2Si- and Mg2Ge-based alloys offers opportunities for optimizing TE properties. Experimental results revealed a reduction in fracture toughness and microhardness with increasing Sn content, consistent with previous findings. ZT values reach up to 1.06 for compositions with higher Sn content.

KW - Electrical transport

KW - Mechanical properties

KW - Scanning electron microscopy, SEM

KW - Thermoelectric

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/85219494761

U2 - 10.1016/j.jallcom.2025.179592

DO - 10.1016/j.jallcom.2025.179592

M3 - Article

AN - SCOPUS:85219494761

SN - 0925-8388

VL - 1021

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 179592

ER -