Abstract
The structure, magnetic properties, ferromagnetic resonance and giant magnetoimpedance effect (GMI) were studied in FexNi100-x thin films and multilayered systems having compositions with small deviation from zero magnetostriction in order to find the best conditions for possible applications in the area of small pressure sensors. A comparative analysis of the effective magnetization and g-factor was carried out for the thin films of FexNi100-x (x = 19.8, 17.5, 15.0, 11.9) alloys. Comparison of the concentration dependences for static 4πMs and dynamic 4πMeff magnetization values allows to select a narrow interval of concentrations around Fe15Ni85 for the development of a microfluidic small pressure sensitive elements based on GMI effect. The maximum value of GMI ratio (ΔZ/Z) ratio shows linear dependence on the iron content in the FexNi100-x alloy for the concentration range under consideration.
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