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What is the relationship between rare earth and magnetic materials?

Rare earth is one of the raw materials of magnetic materials
Rare earth permanent magnet material
Mainly rare earth cobalt permanent magnet materials and NdFeB permanent magnet materials. The former is an intermetallic compound formed by rare earth elements such as neodymium, ytterbium, ytterbium, ytterbium, etc. and cobalt, and its magnetic energy product is 150 times that of carbon steel, 3 to 5 times that of aluminum nickel-cobalt permanent magnet material, and 8 to 8 of permanent magnet ferrite. 10 times, low temperature coefficient, magnetic stability, coercivity up to 800 kA/m. Mainly used for magnetic systems such as low-speed torque motors, starter motors, sensors, and magnetic bearings. Neodymium iron boron permanent magnet material is the third generation of rare earth permanent magnet material, its remanence, coercive force and maximum energy product is higher than the former, non-friable, has good mechanical properties, alloy density is low, is conducive to the lightweight magnetic components Thinning, miniaturization, and miniaturization. However, its high magnetic temperature coefficient limits its application.
The protection of raw materials is of course good for magnetic materials.
Rare-Earth Permanent Magnets and Lithium Batteries Metal-lithium ores are all new energy concepts and they have nothing to do with them.

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