Enhanced power factor of higher manganese silicide via melt spin synthesis method
Abstract
We report on the thermoelectric properties of the Higher Manganese Silicide MnSi₁.₇₅ (HMS) synthesized by means of a one-step non-equilibrium method. The ultrahigh cooling rate generated from the melt-spin technique is found to be effective in reducing second phases, which are inevitable during the traditional solid state diffusion processes. Aside from being detrimental to thermoelectric properties, second phases skew the revealing of the intrinsic properties of this class of materials, for example the optimal level of carrier concentration. With this melt-spin sample, we are able to formulate a simple model based on a single parabolic band that can well describe the carrier concentration dependence of the Seebeck coefficient and power factor of the data reported in the literature. An optimal carrier concentration around 5x10²⁰ cm⁻³ at 300 K is predicted according to this model. The phase-pure melt-spin sample shows the largest power factor at high temperature, resulting in the highest zT value among the three samples in this paper; the maximum value is superior to those reported in the literatures.
- Authors:
-
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Chinese Academy of Sciences, Shanghai (China)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1183265
- Alternate Identifier(s):
- OSTI ID: 1226652
- Report Number(s):
- BNL-107694-2015-JA
Journal ID: ISSN 0021-8979; JAPIAU; R&D Project: MA012MABA; KC0202050; TRN: US1500510
- Grant/Contract Number:
- SC00112704; DEAC0298CH10886
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Applied Physics
- Additional Journal Information:
- Journal Volume: 116; Journal Issue: 24; Journal ID: ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; carrier density; materials properties; powders; electrical resistivity; materials quenching
Citation Formats
Shi, Xiaoya, Shi, Xun, Li, Yulong, He, Ying, Chen, Lidong, and Li, Qiang. Enhanced power factor of higher manganese silicide via melt spin synthesis method. United States: N. p., 2014.
Web. doi:10.1063/1.4905243.
Shi, Xiaoya, Shi, Xun, Li, Yulong, He, Ying, Chen, Lidong, & Li, Qiang. Enhanced power factor of higher manganese silicide via melt spin synthesis method. United States. https://doi.org/10.1063/1.4905243
Shi, Xiaoya, Shi, Xun, Li, Yulong, He, Ying, Chen, Lidong, and Li, Qiang. Tue .
"Enhanced power factor of higher manganese silicide via melt spin synthesis method". United States. https://doi.org/10.1063/1.4905243. https://www.osti.gov/servlets/purl/1183265.
@article{osti_1183265,
title = {Enhanced power factor of higher manganese silicide via melt spin synthesis method},
author = {Shi, Xiaoya and Shi, Xun and Li, Yulong and He, Ying and Chen, Lidong and Li, Qiang},
abstractNote = {We report on the thermoelectric properties of the Higher Manganese Silicide MnSi₁.₇₅ (HMS) synthesized by means of a one-step non-equilibrium method. The ultrahigh cooling rate generated from the melt-spin technique is found to be effective in reducing second phases, which are inevitable during the traditional solid state diffusion processes. Aside from being detrimental to thermoelectric properties, second phases skew the revealing of the intrinsic properties of this class of materials, for example the optimal level of carrier concentration. With this melt-spin sample, we are able to formulate a simple model based on a single parabolic band that can well describe the carrier concentration dependence of the Seebeck coefficient and power factor of the data reported in the literature. An optimal carrier concentration around 5x10²⁰ cm⁻³ at 300 K is predicted according to this model. The phase-pure melt-spin sample shows the largest power factor at high temperature, resulting in the highest zT value among the three samples in this paper; the maximum value is superior to those reported in the literatures.},
doi = {10.1063/1.4905243},
journal = {Journal of Applied Physics},
number = 24,
volume = 116,
place = {United States},
year = {Tue Dec 30 00:00:00 EST 2014},
month = {Tue Dec 30 00:00:00 EST 2014}
}
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Works referencing / citing this record:
MnS Incorporation into Higher Manganese Silicide Yields a Green Thermoelectric Composite with High Performance/Price Ratio
journal, July 2018
- Li, Zhiliang; Dong, Jin-Feng; Sun, Fu-Hua
- Advanced Science, Vol. 5, Issue 9
Significant enhancement in thermoelectric performance of nanostructured higher manganese silicides synthesized employing a melt spinning technique
journal, January 2018
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- Nanoscale, Vol. 10, Issue 4
Enhanced thermoelectric performance of higher manganese silicides by shock-induced high-density dislocations
journal, January 2019
- Gao, Zhipeng; Xiong, Zhengwei; Li, Jun
- Journal of Materials Chemistry A, Vol. 7, Issue 7