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http://dx.doi.org/10.4283/JKMS.2013.23.4.117

Magnetostriction of B2-structured FeX (X = Al, Si, Ni, Ga, Ge, and Sn) Alloys: A First-principles Study  

Lee, Sunchul (Department of Physics, University of Ulsan)
Odkhuu, Dorj (Department of Physics, University of Ulsan)
Kwon, Oryong (Department of Physics, University of Ulsan)
Hong, Soon Cheol (Department of Physics, University of Ulsan)
Publication Information
Journal of the Korean Magnetics Society / v.23, no.4, 2013 , pp. 117-121 More about this Journal
Abstract
In this study we investigated magnetism and magnetostriction of B2-structured FeX (X = Al, Si, Ni, Ga, Ge, and Sn) using a first-principles method, in order to survey the possibility of developing a transition metal based magnetostriction material. The Full-potential Linearized Augmented Plane Wave method was employed for solving the Kohn-Sham equation within the generalized gradient approximation for exchange-correlation interaction between electrons. FeX alloys are stabilized in ferromagnetic states except for the FeSi and FeGe alloys. Magnetostrcition coefficients of FeX (X = Al, Ni, Ga, and Sn) were calculated to be -5, +6, -84, -522ppm, respectively. It is noteworthy that the magnetostriction coefficient (-522ppm) of FeSn is larger than that (+400ppm) of Gafenol.
Keywords
magnetostriction; first-principles calculation; Fe-based alloy; magnetism;
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