稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
Journal of Rare Earths
2015年
11期
1175-1181
,共7页
王新科%郭凯%Igor Veremchuk4%Ulrich Burkhardt4%冯贤娟%赵景泰%ZHAO Jingtai
王新科%郭凱%Igor Veremchuk4%Ulrich Burkhardt4%馮賢娟%趙景泰%ZHAO Jingtai
왕신과%곽개%Igor Veremchuk4%Ulrich Burkhardt4%풍현연%조경태%ZHAO Jingtai
SnTe%Eu-and Na-substitution%hole concentration%thermoelectric properties%lattice parameter%rare earths
Thermoelectric properties of spark-plasma-sintering prepared bulk materials EuxNayzSn1–x–y–zTe above room temperature were investigated. The implementation of Eu and Na into the SnTe lattice was monitored by refinement of lattice parameters as well as energy dispersive X-ray spectroscopy (EDXS). The binary SnTe achieved the highest ZT value of 0.63 at 786 K, and showed a hole concentration of 4.6×1019 cm–3 at 300 K. In comparison with pristine SnTe, the samples containing Eu had lower carrier mobility but higher Hall carrier concentration. For Eu-and Na-substituted samples, the increased hole concentration was unfavorable for the improvement of thermoelectric properties.
