The most common thing that is done is making super strength magnets. It’s far more magnetic than iron, so you cane make much stronger, and hence smaller and lighter magnets.
I’ve got a “neo” speaker and its much easier to move around than a regular speaker.
Neodymium makes the strongest magnets known – these magnets are used in ear phones and microphones, but aren’t used in everything because it’s an expensive metal.
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