Rare-earth magnets are a type of powerful permanent magnet made from alloys of rare-earth elements. The two most common types of rare-earth magnets are neodymium magnets (NdFeB) and samarium-cobalt magnets (SmCo). 1. **Neodymium Magnets (NdFeB)**: - These are the most widely used type of rare-earth magnets. They are made from an alloy of neodymium, iron, and boron (Nd2Fe14B).
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