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Series of hysteresis loops for Fe 48 Co 32 P 14 B 6 metallic glass at magnetizing field up to H max = 300 A/m with different mechanical loads applied along the ribbon. Inset shows the dependences of hysteresis loop's squareness and saturation induction B s on mechanical stress σ.
Source publication
The paper presents the possibility to build a tension gauge capable to discriminate different kinds of deformations: compression and twisting (induced by torsion strain) based on the magnetoelastic effect in new metallic glasses Fe80−x Cox P14B6. Applied loads increase coercive field H c, saturation induction B s and rectangularity of magnetic hyst...
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Citations
... This work aims to examine magnetoelastic properties of Fe 48 Co 32 P 14 B 6 metallic glass and to reveal how advantageous it could be used for sensing various components of elastic deformations. High magnetoelastic coupling and large elastic thresholds promise amorphous magnetic materials for many practical applications [9,10]. ...
We evaluate properties of the prototype of a strain gauge capable to discriminate different strain components: tension and torsion. It makes use of magnetoelastic effect in new Fe48Co32P14B6 metallic glass. As a sensing material, it surpasses characteristics of commercial Iron-Nickel Metglas® alloy: relative differential permeability of as quenched amorphous ribbon is of about 110000, the saturation induction Bs = 1.45 T, coercive field as low as 4 A/m, Curie temperature above 700 K, and significantly higher thermal stability. Different deformation components were determined through the analyses of the shape of hysteresis B-H loops. Fe-Co-P-B glass strain gauge can simultaneously detect as small tensile strains as 1.9 × 10⁻⁵ and less than 0.13 deg/cm of torsional distortions.
Becker-Kersten method, which involves observing hysteresis M-H loops under mechanical stress, was applied to measure magnetostriction properties in amorphous rapid quenched ribbons Fe80-x Cox P14B6. It is shown that magnetostriction constant increases with the growth of cobalt atomic content from (1.75 ± 0.13)×10⁻⁶ for x = 25 to (1.60 ± 0.05)×10⁻⁵ for x = 40.
