Synthesis and thermoelectric properties of half-Heusler alloy YNiBi

被引：36

作者：

Li, Shanming ^{[1
]}

Zhao, Huaizhou ^{[1
]}

Li, Dandan ^{[1
]}

Jin, Shifeng ^{[1
]}

Gu, Lin ^{[1
]}

机构：

[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2015年 / 117卷 / 20期

关键词：

TI; PERFORMANCE; TRANSPORT; FIGURE; MERIT; PBTE; GAP; ZR;

D O I：

10.1063/1.4921811

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The half-Heusler (HH) alloy, YNiBi, was synthesized through a reaction between Bi and the intermediate YNi phase. The thermoelectric properties of HH YNiBi were measured most thoroughly. A moderate power factor of 13.3 mu Wcm(-1) K-2 was achieved at 485 K, and rather low lattice thermal conductivity was identified, consistent with the theoretical expectation for YNiBi. A significant bipolar contribution to thermal conductivity was observed in YNiBi, which induces a relatively low thermoelectric dimensionless figure-of-merit zT in this material. Enhancement of zT for YNiBi could be realized through appropriate doping to suppress the bipolar effect. (c) 2015 AIP Publishing LLC.

引用

页数：7

共 50 条

[1]

[Anonymous], THERMOELECTRIC THERM

[2]

[Anonymous], SPRINGER SER MATER S

[3]

[Anonymous], 2009, PHYS REV B

[4] Effect of Sb doping on the thermoelectric properties of Ti-based half-Heusler compounds, TiNiSn1-xSbx [J].