稀土磁铁，Rare-earth magnets Rare-earth magnets are strong, permanent magnets made from alloys of rare earth elements. Rare-earth magnets are substantially stronger than ferrite or alnico magnets.
Magnetic fields produced by rare-earth magnets can be in excess of 1.2 teslas. Ferrite or ceramic magnets typically exhibit 50 to 100 milliteslas. Common applications of rare-earth magnets include computer hard drives, audio speakers and bicycle dynamos. Rare-earth magnets are used in stop motion animation as tie-downs when the use of traditional screw and nut tie-downs is impractical. Rare-earth magnets are used for diamagnetic levitation experimentation, the study of magnetic field dynamics and superconductor levitation. LSM launch technology found on roller coaster and other thrill rides utilize rare-earth magnets.
Rare-earth magnets are strong, permanent magnets made from alloys of rare earth elements. Rare-earth magnets are substantially stronger than ferrite or alnico magnets.