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- W2384455300 abstract "Fe1-xCoxSi2 compounds were prepared by mechanical alloying combined with sintering process.The effect of Co doping on the thermoelectric properties was studied.The electronic structure of Fe-doped and undoped compounds was calculated using the first principle plane-wave pseudo-potential based on the density function theory.The experimental and calculated results show that the value of concentration x of Co was between 0 and 0.05.Fermi surface of β-FeSi2 locates valence band edge,indicating that β-FeSi2 is a semiconductor and its electrical resistivity decreases as the temperature increasing.The Fermi surface of Co-doped compound moves to the bottom of conduction band and its electrical resistivity increases as the temperature increasing,exhibiting n-type degenerated semiconductor character.Under the condition of experiment,thermoelectrical properties of the sample found the maximum power factor of sample reached 60 μW·m-1·K-2 at 873 K when x=0.03." @default.
- W2384455300 created "2016-06-24" @default.
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- W2384455300 date "2012-01-01" @default.
- W2384455300 modified "2023-09-26" @default.
- W2384455300 title "Thermoelectric Properties and First Principle Study on Electronic Structure of Co Doped β-FeSi_2 Compounds" @default.
- W2384455300 hasPublicationYear "2012" @default.
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