Critical cooling rate for the glass formation of ferromagnetic Fe40Ni40P14B6 alloy

Details Critical cooling rate for the glass formation of ferromagnetic Fe40Ni40P14B6 alloy Critical cooling rate for the glass formation of ferromagnetic Fe40Ni40P14B6 alloy

2006-11-26

arxiv.org/abs/cond-mat/0611651v2

Physics

Condensed Matter

Materials Science

23 pages, 3 figures, 1 table

Scientific paper

Bulk ferromagnetic amorphous Fe-Ni-P-B alloys in rod shape were formed by a rapid solidification technique. The largest amorphous specimen prepared had a diameter of ~2.5 mm and the corresponding cooling rate for the glass formation of this alloy system in our experiment can be estimate to be around 492.4 K/s by the method of finite-difference numerical calculation. This value is on the same order of magnitude as the critical cooling rate Rc of Fe40Ni40P14B6 alloy estimated by the method of constructing the continuous-cooling-transformation (CCT) curve. It is indicated that the heterophase impurities have been eliminated well in our experiment.

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