Abstract
Mg₃Sb₂-based materials are promising candidates to replace n-type Bi₂Te₃ for cooling and power generation at low temperatures. Generally, the thermoelectric performance of a material is sensitively affected by synthesis process parameters, and among them, sintering temperature (T_s) is a critical one. In this study, n-type Mg₃SbBi_0.99Te_0.01 polycrystalline samples were fabricated..... More

Abstract
Mg₃Sb₂-based materials are very promising for thermoelectric applications at low temperatures, and are strong candidates to replace n-type Bi₂Te₃ for cooling and power generation. Substituting Sb atoms with chalcogen elements (S, Se, Te) is a typical method of n-type doping, while doping the Mg site with Group 3 elements (Y,..... More

Abstract
NbFeSb-based alloys are promising p-type half-Heusler materials with excellent thermoelectric performance, thermal stability, and naturally abundant constituent elements. Alloying and doping are powerful techniques for enhancing the thermoelectric properties of half-Heusler materials. This study experimentally investigated the effects of V alloying in NbFeSb codoped with Ti, Zr, and Sn. As..... More

Abstract
Half-Heusler (HH) thermoelectric materials are promising for mid- to high-temperature applications, and MNiSn (M = Ti, Zr, Hf) is a representative n-type HH alloy. In general, the M sites are mixed with isoelectronic elements Ti, Zr, and Hf, to lower the lattice thermal conductivity, and the Sn sites are doped..... More

Abstract
In this study, half-Heusler (HH) thermoelectric materials Nb_0.8Hf_0.2FeSb_0.98Sn_0.02 (p-type) and Hf_0.25Zr_0.25Ti_0.5NiSn_0.98Sb_0.02 (n-type) were synthesized using induction melting and spark plasma sintering. For alloying, a conventional induction melting technique was employed rather than arc melting, for mass production compatibility, and the thermoelectric properties of the materials were analyzed. The maximum dimensionless..... More