TY - JOUR
T1 - Thermoelectric properties of mineral tetrahedrites Cu 10Tr 2Sb 4S 13 with low thermal conductivity
AU - Suekuni, Koichiro
AU - Tsuruta, Kojiro
AU - Ariga, Tomoki
AU - Koyano, Mikio
PY - 2012/5
Y1 - 2012/5
N2 - We have investigated thermoelectric properties of synthesized mineral Cu 10Tr 2Sb 4S 13 (Tr = Mn, Fe, Co, Ni, Cu, and Zn) tetrahedrites, which have a cubic and complex crystal structure. The mother phase Tr = Cu shows metal-semiconductor transition and anomalous hysteresis. Through various Tr substitutions, the thermopower was increased and thermal conductivity was decreased. Results show that Tr = Ni had the largest dimensionless figure of merit ZT of 0.15 at 340K. The main advantage for the large ZT is the quite low lattice thermal conductivity. Because of the large ZT and the environmentally friendly components, tetrahedrites are anticipated as a good thermoelectric material.
AB - We have investigated thermoelectric properties of synthesized mineral Cu 10Tr 2Sb 4S 13 (Tr = Mn, Fe, Co, Ni, Cu, and Zn) tetrahedrites, which have a cubic and complex crystal structure. The mother phase Tr = Cu shows metal-semiconductor transition and anomalous hysteresis. Through various Tr substitutions, the thermopower was increased and thermal conductivity was decreased. Results show that Tr = Ni had the largest dimensionless figure of merit ZT of 0.15 at 340K. The main advantage for the large ZT is the quite low lattice thermal conductivity. Because of the large ZT and the environmentally friendly components, tetrahedrites are anticipated as a good thermoelectric material.
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U2 - 10.1143/APEX.5.051201
DO - 10.1143/APEX.5.051201
M3 - Article
AN - SCOPUS:84861399298
SN - 1882-0778
VL - 5
JO - Applied Physics Express
JF - Applied Physics Express
IS - 5
M1 - 051201
ER -