Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Electronic Structures and Noncollinear Magnetic Properties of Structurally Disordered Fe

  • Park, Jin-Ho (Department of Physics, Pohang University of Science and Technology) ;
  • Min, B.I. (Department of Physics, Pohang University of Science and Technology)
  • Published : 2010.03.31
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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.

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