Thermoelectric properties of half-Heusler phases: ErNi/sub 1-x/Cu/sub x/Sb, YNi/sub 1-x/Cu/sub x/Sb and Zr/sub x/Hf/sub y/Ti/sub z/NiSn

Sportouch, S.; Rocci‐Lane, Melissa; Ireland, John R.; Brazis, Paul; Kannewurf, Carl R.; Kanatzidis, M. G.

doi:10.1109/ict.1999.843400

Cited by 1 publication

(1 citation statement)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The major challenge is to find proper materials with seemingly conflicting combinations of their transport properties for the laid-down temperature range of the target application. Half-Heusler (HH) phases with rare-earth (RE) metals have recently been recognized as possible candidates for thermoelectric materials [1,2,3,4,5,6,7,8,9,10,11,12], applicable at high temperatures. These materials show p -type behavior.…”

Section: Introductionmentioning

confidence: 99%

Thermal and Electronic Transport Properties of the Half-Heusler Phase ScNiSb

et al. 2019

View full text Add to dashboard Cite

Thermoelectric properties of the half-Heusler phase ScNiSb (space group F 4 ¯ 3m) were studied on a polycrystalline single-phase sample obtained by arc-melting and spark-plasma-sintering techniques. Measurements of the thermopower, electrical resistivity, and thermal conductivity were performed in the wide temperature range 2–950 K. The material appeared as a p-type conductor, with a fairly large, positive Seebeck coefficient of about 240 μV K−1 near 450 K. Nevertheless, the measured electrical resistivity values were relatively high (83 μΩm at 350 K), resulting in a rather small magnitude of the power factor (less than 1 × 10−3 W m−1 K−2) in the temperature range examined. Furthermore, the thermal conductivity was high, with a local minimum of about 6 W m−1 K−1 occurring near 600 K. As a result, the dimensionless thermoelectric figure of merit showed a maximum of 0.1 at 810 K. This work suggests that ScNiSb could be a promising base compound for obtaining thermoelectric materials for energy conversion at high temperatures.

show abstract