Magnetic material is one of three fundamental
functional materials in the industry.
It was divided in two types based on
magnetic properties: soft magnet and hard magnet (also named permanent magnet).
Both are easy to get magnetized. The difference is: hard magnet can stay
magnetized for long time with high coercive force; soft magnet has low coercive
force, so lost its magnetic force easily.
Soft magnet: steel and iron, soft ferrite
and high iron amorphous materials
Hard magnet: Sintered Neodymium Magnet, BondedNeodymium Magnet, AlNiCo, Samarium Cobalt Magnet, Ferrite (due to rare earth
material content, they are also called rare earth magnets except ferrite)
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