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29 March 2024
 
  » arxiv » cond-mat/0606024

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Structure peculiarities of cementite and their influence on the magnetic characteristics
A. K. Arzhnikov ; L. V. Dobysheva ;
Date 1 Jun 2006
Subject Materials Science
AbstractThe iron carbide $Fe_3C$ is studied by the first-principle density functional theory. It is shown that the crystal structure with the carbon disposition in a prismatic environment has the lowest total energy and the highest energy of magnetic anisotropy as compared to the structure with carbon in an octahedron environment. This fact explains the behavior of the coercive force upon annealing of the plastically deformed samples. The appearance of carbon atoms in the octahedron environment can be revealed by Mossbauer experiment.
Source arXiv, cond-mat/0606024
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