| The effects of Mn addition on the magnetic properties were investigated for Co_(76-x) Mn_xCr₄B_(16)Si₄(X=0, 2, 4, 6, 8) soft magnetic amorphous alloys which have high saturation magnetization, low coercive force and high permeability. The magnetic properties such as saturation magnetization, coercive force and maximum permeability of these alloys were measured by VSM and B-H loop tracer. With increasing Mn content, the crystallization temperature increased whereas Curie temperature decreased. The saturation magnetization had a maximum value at X=4, but the coercive force and the maximum permeability had best values at X=6. The improvement of the soft magnetic properties of the amorphous alloys were attributed to formation of a ferromagnetic Co-Mn coupling and decrease of magnetostriction induced by Mn addition. |
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