Thermoelectric Properties of Double Half-Heusler Ti2MnNiSi2 Alloy

被引：0
作者：
M. V. Matyunina [1 ]
D. R. Baigutlin [1 ]
M. A. Zagrebin [1 ]
V. V. Sokolovskiy [1 ]
V. D. Buchelnikov [1 ]
机构：
[1] Chelyabinsk State University, Chelyabinsk
来源：
Physics of Metals and Metallography | 2024年 / 125卷 / 14期
基金：
俄罗斯科学基金会;
关键词：
double half-Heusler alloys; half-metallic ferromagnets; thermal conductivity; thermoelectric properties;
D O I：
10.1134/S0031918X24602622
中图分类号：
学科分类号：
摘要：
Abstract: This paper presents a study of the effect of structural disorder on the thermoelectric properties of the double half-Heusler Ti2MnNiSi2 alloy. The study shows that the ordered structure of the material is almost a half-metallic ferromagnet, and the thermoelectric figure of merit, when doped with n-type carriers, reaches 0.38 at a temperature of 700 K and an electron concentration of 3 × 1022 cm–3. The high value of this thermoelectric effect can be attributed to the low thermal conductivity kL. At room temperature, the minimum value of kL is 2.27 W m–1 K–1 in a disordered system and 3.62 W m–1 K–1 in an ordered one. © Pleiades Publishing, Ltd. 2024.
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页码：1885 / 1893
页数：8
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