Characterization of highly magnetostrictive metallic glass coatings

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Abstract
Amorphous films of Fe81B13.5Si3.5C2 were prepared by conventional diode rf sputtering with a deposition rate of about 100 Å/min. The films are magnetically harder than the ribbon samples of the same composition. By appropriate magnetic annealing treatment anisotropy energy values in the range of 60–600 J/m3 have been obtained. The effect of thermal and magnetic annealing on various magnetic properties is also discussed. The relevance of the results of this study to the performance of fiber optic magnetic field sensors which utilize such magnetostrictive glasses is discussed.