Magnetic properties of Fe-TM-B (TM = Sn, W, Mo-W) alloys prepared by electroless plating

Fe-TM-B (TM = Sn, TN, Mo-W) alloy deposits with thicknesses in the range 1 to 3 mu m prepared by electroless plating were studied with respect to thei r magnetic properties. The saturation magnetization of the deposits increas es with increasing iron content and decreases with increasing annealing tem perature. On the contrary, the coercivity of the alloy deposits runs throug h a minimum with increasing boron content for Fe-Sn-B and Fe-W-B and increa se continually with increasing annealing temperature for Fe-Mo-W-B. The rem anence-to-saturation ratio of the alloy deposits is lower than 0.37 for Fe- Sn-B and Fe-W-B, and 0.53 for Fe-Mo-W-B, and does not significantly increas e even after heat treatment.