Abstract
We proposed an advanced method to improve saturation magnetization of soft magnetic nanoparticle films, which are of great concern for application in modern electromagnetic devices operated in the GHz range. Fe50Ni50 nanoparticle films with a particle size of about 6 nm were fabricated at room temperature by electric field-assisted deposition. An electric field of 10–20 kV was applied on the deposition platform during the film’s manufacture to obtain high stacking density and superior in-plane soft magnetic properties in the films. Based on the results of the microwave permeability spectra, it is found that the samples with higher saturation magnetization have excellent microwave response. These results indicate that magnetic softness and microwave behavior of FeNi nanoparticle films can be modulated by applying electric field during deposition.
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