Тип публикации: статья из журнала
Год издания: 2018
Идентификатор DOI: 10.1016/j.scriptamat.2017.12.019
Ключевые слова: Germanium, Magnesium silicide, Mechanical alloying, Nanocomposite, Silicon, Spark plasma sintering, Thermoelectric materials
Аннотация: We report on thermoelectric properties of low Ge content n-type Si0.9Ge0.1–Mg2Si nanocomposite. Introduction of the Mg2Si phase into a SiGe matrix resulted in a dramatic drop of the lattice thermal conductivity beyond the previously reported lowest limit for SiGe alloys due to intensification of phonon scattering on SiGe–Mg2Si grain boundaries. For a sample doped with 1 at.% of Mg2Si, the peak value of thermoelectric figure of merit ZT reached ~ 0.8 at 800 °C. Sintered nanocomposites still exhibit high thermoelectric performance while being almost two times cheaper than Si0.8Ge0.2. © 2017
Издание
Журнал: Scripta Materialia
Выпуск журнала: Vol. 146
Номера страниц: 295-299
ISSN журнала: 13596462
Издатель: Acta Materialia Inc
Персоны
- Usenko A. (National University of Science and Technology “MISiS”, Moscow, Russian Federation)
- Moskovskikh D. (National University of Science and Technology “MISiS”, Moscow, Russian Federation)
- Korotitskiy A. (National University of Science and Technology “MISiS”, Moscow, Russian Federation)
- Gorshenkov M. (National University of Science and Technology “MISiS”, Moscow, Russian Federation)
- Zakharova E. (National University of Science and Technology “MISiS”, Moscow, Russian Federation)
- Fedorov A. (Siberian Federal University, Krasnoyarsk, Russian Federation, Kirensky Institute of Physics, Krasnoyarsk, Russian Federation)
- Parkhomenko Y. (National University of Science and Technology “MISiS”, Moscow, Russian Federation)
- Khovaylo V. (National University of Science and Technology “MISiS”, Moscow, Russian Federation, National Research South Ural State University, Chelyabinsk, Russian Federation)
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