The magnetostriction constant and saturation magnetization at room temperature are measured for iron-based amorphous alloys containing various kinds of metalloid and metal atoms, except Co and Ni. The data show that the magnetostriction constant is proportional to the square of the saturation magnetization for these alloys.
The effect of the rotating magnetic field annealing on high magnetic induction amorphous alloy Fe5Co75Si4B16 (TC≳Tx) was studied. Experimental results and the theoretical analysis gave the following conclusions. 1) Induced magnetic anisotropy is dispersed by the rotating magnetic field annealing. 2) The relationship between magnetic permeability μ and number of rotations R is given by the formula 3) The rotating field annealing is useful to eliminate the induced magnetic anisotropy, especially for the amorphous materials with TC≳Tx.
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