Methods for tailoring magnetism, and structures obtained therefrom

A method of making a magnet with tailored magnetism by additive manufacturing, said method comprising:

• (a) providing a feedstock composition containing base particles and one or more surface-modifying particles that are chemically and/or physically disposed on surfaces of said base particles, wherein said surface-modifying particles are magnetic or magnetically susceptible;
• (b) exposing a first amount of said feedstock composition to an energy source for melting in a scan direction, thereby generating a first melt layer;
• (c) solidifying said first melt layer in the presence of an externally applied magnetic field, thereby generating a magnetic metal layer containing a plurality of individual voxels;
• (d) optionally repeating steps (b) and (c) a plurality of times to generate a plurality of solid layers by sequentially solidifying a plurality of melt layers in a build direction, thereby generating a plurality of magnetic metal layers;
• and
• (e) recovering a magnet comprising said magnetic metal layer,
• wherein said externally applied magnetic field has a magnetic-field orientation, defined with respect to said scan direction, that is selected to control a magnetic axis within said magnetic metal layer.