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Increased electrical conductivity in fine-grained (Zr,Hf)NiSn based thermoelectric materials with nanoscale precipitates
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10.1063/1.4730436
/content/aip/journal/apl/100/25/10.1063/1.4730436
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/25/10.1063/1.4730436

Figures

Image of FIG. 1.
FIG. 1.

Lattice thermal conductivity κ L for the MS and LM Hf1 x Zr x NiSn1 y Sb y samples with and without Sb doping. The dash line represents the calculated minimum thermal conductivity κ min of the Hf0.4Zr0.6NiSn0.98Sb0.02 alloy.

Image of FIG. 2.
FIG. 2.

Temperature dependence of electrical conductivity for the Hf1 x Zr x NiSn1 y Sb y alloys (a), and the electrical conductivity ratio of the MS and LM samples at room temperature as a function of Zr content (b).

Image of FIG. 3.
FIG. 3.

Temperature dependence of electrical conductivity for undoped LM and MS Hf1 x Zr x NiSn samples before and after annealing at 800 °C for 5days. Here, “A” means annealing.

Image of FIG. 4.
FIG. 4.

TEM images of the MS Hf0.6Zr0.4NiSn0.98Sb0.02 bulk sample, showing the submicron grains (a) and embedded in-situ nanophases (b). The inset in (b) is the high resolution TEM image of a nanophase.

Tables

Generic image for table
Table I.

Carrier concentration n H, electrical conductivity σ, and Seebeck coefficient α of the LM and MS Hf1 x Zr x NiSn1 y Sb y alloys at room temperature.

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/content/aip/journal/apl/100/25/10.1063/1.4730436
2012-06-21
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Increased electrical conductivity in fine-grained (Zr,Hf)NiSn based thermoelectric materials with nanoscale precipitates
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/25/10.1063/1.4730436
10.1063/1.4730436
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