Magnetic Materials TRIZ Cases

Sequential light and heavy rare-earth diffusion raises coercivity in La/Ce-rich sintered magnets while limiting heavy rare-earth buildup.

Cerium-based magnet alloys replace scarce neodymium and dysprosium while preserving high Curie point, magnetization, and energy product.

A Pr-containing RTB magnet composition maintains coercivity and remanence without heavy rare earths, even when carbon content is high.

Using 20-40 mass% Cu in an RHdCu grain boundary diffusion alloy raises 130°C coercivity and squareness while limiting remanence loss.

Layered magnetic nanoparticles use a silica buffer and gold shell to resist aggregation while enabling controlled motion under external magnetic fields.

Curved 3D twists in magnetic racetrack ribbons tune domain wall torque, velocity, and threshold current for stepwise motion and selective nucleation.

Amorphizing nylon 12 during bonded magnet processing creates an unextractable component that improves heat resistance and strength retention.

Controlled one-step casting forms a predominant 1:7 Ce-based matrix phase, limiting soft magnetic phases and avoiding powder metallurgy.

Using xylylenediamine-based polyamide in bonded magnets improves magnetization while maintaining chemical resistance and low water absorption.

Optimized Ce-based alloy casting forms a 1:7 matrix phase to avoid powder metallurgy while preserving strong extrinsic magnetic properties.

In-line mechanical scribing during amorphous foil casting refines magnetic domains and cuts transformer core loss without slowing production.

Magnetic-field orientation plus light rolling and high-pressure pressing densify Sm-Fe-N powder without pyrolysis, improving magnet properties.