AlNiCo
Alnico magnet is a permanent magnet made by combiming aluminum, nickel, iron, cobalt, and other elements. They come in isotropic, non-directional, or anisotropic, mono-directional, form.
Alnico magnets play an essential role in many industrial and consumer products. You can find Alnico magnets in electric motors, electric guitar pickups, microphones, sensors, speakers, traveling wave tubes, cow magnets, etc.