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Electronic Structures and Noncollinear Magnetic Properties of Structurally Disordered Fe |
Journal of Magnetics, Volume 15, Number 1, 31 Mar 2010, Pages 1-6 |
Jin Ho Park (Department of Physics, Pohang University of Science and Technology), B. I. Min * (Department of Physics, Pohang University of Science and Technology) |
Abstract |
The magnetic properties of amorphous Fe were investigated by examining the electronic structures of structurally disordered Fe systems generated from crystalline bcc and fcc Fe using a Monte-Carlo simulation. As a rst principles band method, the real space spin-polarized tight-binding linearized-mun-tin-orbital recursion method was used in the local spin density approximation. Compared to the crystalline system, the electronic structures of the disordered systems were characterized by a broadened band width, smoothened local density of states, and reduced local magnetic moment. The magnetic structures depend on the short range configurations. The antiferromagnetic structure is the most stable for a bcc-based disordered system, whereas the noncollinear spin spiral structure is more stable for a fcc-based system. |
Keywords: electronic structure of disordered solids; amorphous Fe; amorphous magnetic materials |
DOI: 10.4283/JMAG.2010.15.1.001 |
Full Text: PDF |
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