Abstract
The small-angle magnetization rotation method has been shown to be applicable for measuring the saturation magnetostriction of amorphous wires by using the circumferential field generated by an ac current through the wire. The method was used to measure compositional variation of magnetostriction of Fe-Co based amorphous wires. A saturation magnetostriction λs of 32.9×10−6 and −2.6×10−6 was found for Fe and Co based wires, respectively. The compositional variation of the saturation magnetostriction, λs, for (Fe1−xCox)75Si10B15 amorphous wires (X=0–0.8) decreases with increasing cobalt content and crosses zero around X=0.95 as in amorphous ribbons. The maximum experimental error of measurement was estimated to be about 5%.
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