Thermal conductivity of half-Heusler superlattices

被引：10

作者：

Jaeger, Tino

Holuj, Paulina ^{[1
,4
]}

Mix, Christian ^{[1
,4
]}

Euler, Christoph ^{[1
]}

Aguirre, Myriam Haydee ^{[2
]}

Populoh, Sascha ^{[2
]}

Weidenkaff, Anke ^{[2
,3
]}

Jakob, Gerhard ^{[1
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany

[2] Empa Swiss Fed Labs Mat Sci & Technol, Solid State Chem & Catalysis Lab, CH-8600 Dubendorf, Switzerland

[3] Univ Stuttgart, Inst Mat Sci, D-70569 Stuttgart, Germany

[4] Grad Sch Mat Sci Mainz, D-55128 Mainz, Germany

来源：

SEMICONDUCTOR SCIENCE AND TECHNOLOGY | 2014年 / 29卷 / 12期

关键词：

thermoelectric; half-Heusler; superlattice; reduced thermal conductivity; 3 omega method; TiNiSn; Zr0.5Hf0.5NiSn; THERMOELECTRIC PROPERTIES; 3-OMEGA METHOD; MERIT; ALLOYS; FIGURE; TI; REDUCTION; GROWTH; FILMS; ZR;

D O I：

10.1088/0268-1242/29/12/124003

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Thin films and superlattices (SLs) of TiNiSn and Zr0.5Hf0.5NiSn layers have been grown by dc magnetron sputtering on MgO (100) substrates to reduce the thermal conductivity, aiming for improvement of the thermoelectric figure of merit ZT. The thermal conductivity of 1 Wm(-1)K(-1) was measured by the differential 3 omega method for an SL with a periodicity of 8.8 nm. In addition to x-ray diffraction analysis of the SL crystal structure, smooth interfaces were confirmed by scanning/transmission electron microscopy.

引用

页数：5

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