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Impact of grain sizes on phonon thermal conductivity of bulk thermoelectric materials
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10.1063/1.2137463
/content/aip/journal/apl/87/24/10.1063/1.2137463
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/24/10.1063/1.2137463
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic drawing of phonon reflection and transmission at the interface between a grain and the grain boundary.

Image of FIG. 2.
FIG. 2.

The curves of scaling functions varying with the grain sizes for different dimensional position coordinates of and . (a) vs the grain diameter; (b) vs the grain-boundary thickness. Here , .

Image of FIG. 3.
FIG. 3.

Comparison of scaling function with others and , which varies in the diameter region of . Here , , , and .

Image of FIG. 4.
FIG. 4.

The semilogarithmic curves of reduction ratio of bulk thermal conductivity vs the grain diameter for the materials of Si and CoSb3 when , , , and for Si and for CoSb3.

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/content/aip/journal/apl/87/24/10.1063/1.2137463
2005-12-05
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Impact of grain sizes on phonon thermal conductivity of bulk thermoelectric materials
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/24/10.1063/1.2137463
10.1063/1.2137463
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