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Open AccessArticle

Comparison of Stress-Impedance Effect in Amorphous Ribbons with Positive and Negative Magnetostriction

Warsaw University of Technology, Institute of Metrology and Biomedical Engineering, 02-525 Warsaw, Poland
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Materials 2019, 12(2), 275; https://doi.org/10.3390/ma12020275
Received: 5 December 2018 / Revised: 7 January 2019 / Accepted: 12 January 2019 / Published: 16 January 2019
(This article belongs to the Special Issue Magnetoelastic Materials)
The SI (stress-impedance) effect in amorphous ribbons with varying magnetostriction was investigated. Iron- and cobalt-based ribbons with different magnetostriction coefficients were put under tensile stress in a dead weight tester and the impedance change was investigated in function of applied stresses. Significant differences of characteristics are presented. Stress-impedance analog of Villari reversal point was observed. The reversal point showed driving current frequency dependence, in which this point manifests for different stress values. Based on the obtained SI characteristics and magnetoelastic hysteresis, the most appropriate stress-sensing material was selected for development of precise small forces sensor. View Full-Text
Keywords: metallic glass; stress-impedance; Villari effect; strain sensing metallic glass; stress-impedance; Villari effect; strain sensing
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MDPI and ACS Style

Gazda, P.; Nowicki, M.; Szewczyk, R. Comparison of Stress-Impedance Effect in Amorphous Ribbons with Positive and Negative Magnetostriction. Materials 2019, 12, 275.

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