Structural and Thermoelectric Properties of Ternary Full-Heusler Alloys

K. Hayashi; M. Eguchi; Y. Miyazaki

doi:10.1007/s11664-016-4944-0

Structural and Thermoelectric Properties of Ternary Full-Heusler Alloys

K. Hayashi, M. Eguchi, Y. Miyazaki

ENG - Applied Physics

Research output: Contribution to journal › Article

10 Citations (Scopus)

Abstract

The thermoelectric properties of ternary full-Heusler alloys, Co₂YZ, which are in a ferromagnetic state up to high temperature above 300 K, were measured and are discussed in terms of the crystal structure and electronic states. Among the full-Heusler alloys studied, the Co₂MnSi sample exhibited the highest absolute value of Seebeck coefficient and also the highest electrical conductivity in the temperature range from 300 K to 1023 K. The highest power factor of 2.9 × 10⁻³ W/m-K² was obtained for the Co₂MnSi sample at 550 K, demonstrating the potential of half-metallic full-Heusler alloys as thermoelectric materials.

Original language	English
Pages (from-to)	2710-2716
Number of pages	7
Journal	Journal of Electronic Materials
Volume	46
Issue number	5
DOIs	https://doi.org/10.1007/s11664-016-4944-0
Publication status	Published - 2017 May 1

Keywords

Co-based full-Heusler alloys
crystal structure
electronic states
half-metal
magnetic phase transition
thermoelectric properties

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

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Hayashi, K., Eguchi, M., & Miyazaki, Y. (2017). Structural and Thermoelectric Properties of Ternary Full-Heusler Alloys. Journal of Electronic Materials, 46(5), 2710-2716. https://doi.org/10.1007/s11664-016-4944-0

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abstract = "The thermoelectric properties of ternary full-Heusler alloys, Co2YZ, which are in a ferromagnetic state up to high temperature above 300 K, were measured and are discussed in terms of the crystal structure and electronic states. Among the full-Heusler alloys studied, the Co2MnSi sample exhibited the highest absolute value of Seebeck coefficient and also the highest electrical conductivity in the temperature range from 300 K to 1023 K. The highest power factor of 2.9 × 10−3 W/m-K2 was obtained for the Co2MnSi sample at 550 K, demonstrating the potential of half-metallic full-Heusler alloys as thermoelectric materials.",

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N2 - The thermoelectric properties of ternary full-Heusler alloys, Co2YZ, which are in a ferromagnetic state up to high temperature above 300 K, were measured and are discussed in terms of the crystal structure and electronic states. Among the full-Heusler alloys studied, the Co2MnSi sample exhibited the highest absolute value of Seebeck coefficient and also the highest electrical conductivity in the temperature range from 300 K to 1023 K. The highest power factor of 2.9 × 10−3 W/m-K2 was obtained for the Co2MnSi sample at 550 K, demonstrating the potential of half-metallic full-Heusler alloys as thermoelectric materials.

AB - The thermoelectric properties of ternary full-Heusler alloys, Co2YZ, which are in a ferromagnetic state up to high temperature above 300 K, were measured and are discussed in terms of the crystal structure and electronic states. Among the full-Heusler alloys studied, the Co2MnSi sample exhibited the highest absolute value of Seebeck coefficient and also the highest electrical conductivity in the temperature range from 300 K to 1023 K. The highest power factor of 2.9 × 10−3 W/m-K2 was obtained for the Co2MnSi sample at 550 K, demonstrating the potential of half-metallic full-Heusler alloys as thermoelectric materials.

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