Samarium Cobalt
SmCo RotorSamarium Cobalt magnets - the first commercialized "Rare Earth" magnets - were introduced in the early 1970s. They are used today most often in applications which involve elevated temperatures and the need for high magnetic properties. On a dollars per pound basis, the cost of SmCo magnets is about 25 to 50 times that of Ferrite magnets.
Key Benefits
· High magnetic strength - up to about 32MGOe
· May be operated up to about 300°C
· Does not need to be protected against oxidation
Key Challenges
· Very brittle, and hard to machine
Because this material contains Cobalt, the cost of SmCo is relatively high
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