Study of structural and magnetic properties of Fe_(80)P-_9B_(11) amorphous alloy by ab initio molecular dynamic simulation |
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| Affiliation: | College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China |
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| Abstract: | The structural and magnetic properties of Fe80P9B11 amorphous alloy are investigated through ab initio molecular dynamic simulation. The structure evolution of Fe80P9B11 amorphous alloy can be described in the framework of topological fluctuation theory, and the fluctuation of atomic hydrostatic stress gradually decreases upon cooling. The left sub peak of the second peak of Fe-B partial pair distribution functions (PDFs) becomes pronounced below the glass transition temperature, which may be the major reason why B promotes the glass formation ability significantly. The magnetization mainly originates from Fe 3d states, while small contribution results from metalloid elements P and B. This work may be helpful for developing Fe-based metallic glasses with both high saturation flux density and glass formation ability. |
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| Keywords: | amorphous alloy ab initio molecular dynamic simulation local atomic structure magnetic properties |
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