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The Influence of Lattice Vacancy on Electrical and Optical Properties of Mg2Si

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Abstract:

A detailed theoretical study on the influence of lattice vacancy on structural and optical properties of the magnesium silicide Mg2Si has been performed based on the first-principles pseudopotential method. The results show that Mg2Si has changed from indirect band gap semiconductor to direct band gap semiconductor because of Mg vacancy. Compared with the dielectric function, absorption coefficient, refractive index, reflectivity and photon conductivity of Mg2Si, those peaks of Mg15Si8 appear from 0 to 1.8 eV. And the loss function’s biggest peak of Mg15Si8 moves to the direction of high energy.

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Periodical:

Key Engineering Materials (Volume 727)

Pages:

581-587

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.727.581

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Online since:

January 2017

Authors:

Qian Chen, Kan Chen, Qing Chen, Qing Quan Xiao, Quan Xie

Keywords:

Electrical Property, First-Principles, Lattice Vacancy, Magnesium Silicide, Optical Properties

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] V.E. Borisenko: Semiconducting Silicides. (Springer, Berlin 2000). pp.85-87.

Google Scholar

[2] J.E. Mahan, A. Vantomme, G. Langouche and J.P. Becker: Physical Review B, Vol. 54 (1996) No. 23, p.16965.

Google Scholar

[3] P.M. Lee: Phys Rev, Vol. 135 (1964) No. 4A, p.240.

Google Scholar

[4] N.O. Folland: Physical Review, Vol. 158 (1967) No. 3, p.764.

Google Scholar

[5] M.Y. Au-Yang and M.L. Cohen: Physical Review, Vol. 178 (1969) No. 3, p.1358.

Google Scholar

[6] M.C. Payne, M.P. Teter, D.C. Allan, T.A. Arias and J.D. Joannopoulos: Reviews of Modern Physics, Vol. 64 (1992) No. 4, p.1045.

Google Scholar

[7] W. Kohn and L.J. Sham: Physical Review, Vol. 140 (1965) No. 4A, p. A1133.

Google Scholar

[8] D. Vanderbilt: Physical Review B, Vol. 41 (1990) No. 11, p.7892.

Google Scholar

[9] J.G. Barlock and L.F. Mondolfo: Zeitschrift fur Metallkunde, Vol. 66 (1975) No. 10, p.605.

Google Scholar

[10] Q. Chen, Q. Xie, W.J. Yan, C.H. Yang and F.J. Zhao: Sci China Ser G-Phys Mech Astron, Vol. 38 (2008) No. 7, p.825 (in Chinese).

Google Scholar

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