Density Functional Calculations on Electronic and Magnetic Properties of Fe-Pt Systems

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The electronic structures and magnetic properties of Fe-Pt systems were calculated by CASTEP codes, which employed density functional theory, generalized gradient approximation (GGA), Perdew Burke Ernzerh exchange correlation, Pulay density-mixing scheme and Ultra Soft pseudo potential. The band structures and density of states (DOS) were calculated, together with band populations and magnetic properties. The calculated results of α-Fe show the validatiy of this method in predication magnetic properties. It is found that as the Pt concentration increases, Fe 4s and 3d electrons decrease while 4p electrons increase, and the magnetic moment of Fe atom increases. Pt atoms also contribute to the magnetic moment due to polarization. The calculated magnetization agrees with experimental values quite well.

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Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

3103-3106

DOI:

10.4028/www.scientific.net/MSF.475-479.3103

Citation:

Y. S. Gu et al., "Density Functional Calculations on Electronic and Magnetic Properties of Fe-Pt Systems", Materials Science Forum, Vols. 475-479, pp. 3103-3106, 2005

Online since:

January 2005

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$35.00

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