There are many variants of the magnets in this list, including oriented and non-oriented versions, and bonded magnets in which a powder of the magnetic material is embedded in a non-magnetic matrix. Niche materials of limited commercial importance, such as platinum-cobalt, are omitted.
Alnico (cast and sintered) — 11 to 72 kJ/m3
Ceramic Ferrite — 8 to 36 kJ/m3
Samarium Cobalt (primarily SmCo5 and Sm2Co17) — 40 to 240 kJ/m3
Neodymium Iron Boron (“Neo”) — 200 to 400 kJ/m3
Return to Feature
