Luckily, there’s more than one way to make a magnet, and it may soon be possible to build permanent magnets as strong as neodymium magnets, but without any rare earth metals. In fact ...
The two types of rare-earth magnets classified according to the materials which the magnets are made of are Samarium-cobalt and Neodymium magnets. Samarium-cobalt magnets were the first family of rare ...
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