Altering Magnetic Properties of Iron Filament PLA Using Magnetic Field Assisted Additive Manufacturing <i>Lauren Henderson¹, Tanjina N. Ahmed², Camila Belduque³, Jitendra Tate^2,3, Maggie Chen^2,4 and Wilhelmus J. Geerts^1,2</i> 1. Depart

Use of soft magnetic materials are on the rise, and the search for more environmentally friendly, yet practical, materials remains prevalent. In this research, the magnetic properties of 3D samples printed in a magnetic field were explored, referred to as Magnetic Field Assisted Additive Manufacturing (MFAAM), where a magnetic field is applied to a material during printing. MFAAM has shown strong effects on the magnetic properties of hard magnetic 3D printed composites, increasing the materials energy product and remanence, yielding stronger permanent magnets. Here we explore a 3D print field's effects on the properties of eco-friendly iron filled Proto-pasta, i.e. its susceptibility and hysteresis. These factors are important for transformers in reducing the amount of energy lost during each cycle. Samples printed in zero field, a field parallel to the long axis, and a field perpendicular to the long axis were examined using a Vibrating Sample Magnetometer (VSM). Through varying field angle measurements, the data revealed that in the presence of a printed magnetic field, the sample’s susceptibility increased by a factor of two, suggesting MFAAM can increase the functionality of soft magnetic materials.