Magnetoelastic measurements are performed in metallic glasses of composition (Fe0.79Co0.21)75+x. Si15−1.4xB10+0.4x (x = 0, 2, 4, 6, 8, 10) by means of the resonance-antiresonance method. High values of k (magnetoelastic coupling coefficient) and of the ΔY effect are observed in some compositions, reaching 0.7 for k and 50% for ΔY in the as-quenched state. Annealing treatments further improve these values.
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Gutiérrez et al. (1989) studied this question.
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