Nature Chemistry | The Sceptical Chymist

Fall MRS 2012: Rare earth magnets — Reduce, Reuse, Recycle!

Hard disk drives, DVDs and CDs — along with many clean energy devices such as wind turbines and electric vehicles — all demand high-quality permanent magnets such as neodymium-iron-boron and samarium-cobalt for their operation. Increasing demand in these products has meant the cost of the rare-earth metals forming these magnets has gone up; and the Western world is already paying a premium to China for the raw materials. 

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