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Cited by 616

The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.

Thermal conductivity of bulk and nanowire Mg2SixSn1−xalloys from first principles

Li, Wu, Lindsay, L., Broido, D. A., Stewart, Derek A., Mingo, Natalio·2012·Physical Review B
DOI 10.1103/physrevb.86.174307
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Abstract

The lattice thermal conductivity ($\ensuremath{\kappa}$) of the thermoelectric materials, Mg${}_{2}$Si, Mg${}_{2}$Sn, and their alloys, are calculated for bulk and nanowires, without adjustable parameters. We find good agreement with bulk experimental results. For large nanowire diameters, size effects are stronger for the alloy than for the pure compounds. For example, in 200 nm diameter nanowires $\ensuremath{\kappa}$ is lower than its bulk value by 30$%$, 20$%$, and 20$%$ for Mg${}_{2}$Si${}_{0.6}$Sn${}_{0.4}$, Mg${}_{2}$Si, and Mg${}_{2}$Sn, respectively. For nanowires less than 20 nm thick, the relative decrease surpasses 50$%$, and it becomes larger in the pure compounds than in the alloy. At room temperature, $\ensuremath{\kappa}$ of Mg${}_{2}$Si${}_{x}$Sn${}_{1\ensuremath{-}x}$ is less sensitive to nanostructuring size effects than Si${}_{x}$Ge${}_{1\ensuremath{-}x}$, but more sensitive than PbTe${}_{x}$Se${}_{1\ensuremath{-}x}$. This suggests that further improvement of Mg${}_{2}$Si${}_{x}$Sn${}_{1\ensuremath{-}x}$ as a nontoxic thermoelectric may be possible.

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Metadata

Authors
Li, W., Lindsay, L., Broido, D. A., Stewart, D. A., & Mingo, N.
Venue
Physical Review B
Publisher
American Physical Society (APS)
Published
2012-11-29
Volume
86
Issue
17
ISSN
  • 1098-0121 (ISSN-L)
  • 1550-235X
DOI
10.1103/physrevb.86.174307
OpenAlex
W2156485711
Cited by
616
References
38
FWCI
8.98
Type
journal article
Language
en
Open access
closed

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