- Patent Title: Methods for tailoring magnetism, and structures obtained therefrom
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Application No.: US17359557Application Date: 2021-06-26
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Publication No.: US11721458B2Publication Date: 2023-08-08
- Inventor: Brennan Yahata , Eric Clough , Christopher Henry , Amber Sucich , Darby Laplant , Tobias Schaedler
- Applicant: HRL Laboratories, LLC
- Applicant Address: US CA Malibu
- Assignee: HRL Laboratories, LLC
- Current Assignee: HRL Laboratories, LLC
- Current Assignee Address: US CA Malibu
- Agency: O'Connor & Company
- Agent Ryan P. O'Connor
- Main IPC: H01F41/02
- IPC: H01F41/02 ; H01F13/00 ; H01F7/02 ; H01F1/057 ; H01F1/055 ; C22C38/00 ; C22C38/30 ; C22C38/08 ; C22C38/10 ; C22C38/06 ; B33Y80/00

Abstract:
This invention provides methods for fabricating a hard or soft magnet with tailorable magnetic and crystallographic orientations. Methods are disclosed to individually tailor three-dimensional voxels for selected crystallographic orientations and, independently, selected magnetic orientations with location specificity throughout a magnet. Some variations provide a method of making a magnet, comprising: providing a feedstock composition containing magnetic or magnetically susceptible materials; exposing the feedstock composition to an energy source for melting, thereby generating a first melt layer; solidifying the first melt layer in the presence of an externally applied magnetic field, thereby generating a magnetic metal layer containing a plurality of individual voxels; optionally repeating to generate a plurality of solid layers; and recovering a magnet comprising the magnetic metal layer(s), wherein the externally applied magnetic field has a magnetic-field orientation that is selected to control a magnetic axis and a crystallographic texture within the magnetic metal layer(s).
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