Abstract

The magnetic hysteresis and viscosity of SrO(Fe2O3)6/PA-12 filaments with 5wt% and 26wt% was determined with a biaxial VSM. The hysteresis curves indicate that manufactured samples have a flow induced anisotropy with an easy plane perpendicular to the filament’s cylindrical axis. The Mx and My magnetic viscosity signals vary with field and field angle. The Mx magnetic viscosity is maximum in the easy plane and decreases to a factor of two along the macroscopic hard axis of the filament. The My magnetic viscosity is nearly zero along the hard axis and in the easy plane and is maximum for intermediate field angles.

Highlights

  • Polymer composites with magnetic particles are being investigated for applications such as permanent magnets, novel actuators, flux-guides for transformers, inductors, wireless charging applications, electromagnetic screening devices, electrical machines, motors and generators, and magnetic shielding purposes.1–5 In these materials, the magnetic particles are uniformly dispersed in a polymeric matrix in order to reduce the cost and weight of components without sacrificing their magnetic behavior

  • Polymer composites can be manufactured through additive processes such as Fused Filament Fabrication (FFF), which allows to obtain components faster and with highly complex designs compared to magnetic composites manufactured with conventional processes

  • To check the homogeneity of our samples, the saturation magnetic moment density per unit mass was measured for different parts of the filament

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Summary

Introduction

Polymer composites with magnetic particles are being investigated for applications such as permanent magnets, novel actuators, flux-guides for transformers, inductors, wireless charging applications, electromagnetic screening devices, electrical machines, motors and generators, and magnetic shielding purposes. In these materials, the magnetic particles are uniformly dispersed in a polymeric matrix in order to reduce the cost and weight of components without sacrificing their magnetic behavior. Polymer composites with magnetic particles are being investigated for applications such as permanent magnets, novel actuators, flux-guides for transformers, inductors, wireless charging applications, electromagnetic screening devices, electrical machines, motors and generators, and magnetic shielding purposes.. Polymer composites with magnetic particles are being investigated for applications such as permanent magnets, novel actuators, flux-guides for transformers, inductors, wireless charging applications, electromagnetic screening devices, electrical machines, motors and generators, and magnetic shielding purposes.1–5 In these materials, the magnetic particles are uniformly dispersed in a polymeric matrix in order to reduce the cost and weight of components without sacrificing their magnetic behavior. By varying the field and field angle and monitoring the time dependence of the magnetic moment it is possible to determine the activation switching volume and energy barrier. For a composite with a normal distribution of switching fields the time dependent behavior scitation.org/journal/adv is described by a logarithmic function as: t

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