Samarium–cobalt magnet
Strong permanent magnet made from an alloy of a rare-earth element and cobalt / From Wikipedia, the free encyclopedia
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A samarium–cobalt (SmCo) magnet, a type of rare-earth magnet, is a strong permanent magnet made of two basic elements: samarium and cobalt.
They were developed in the early 1960s based on work done by Karl Strnat at Wright-Patterson Air Force Base and Alden Ray at the University of Dayton. In particular, Strnat and Ray developed the first formulation of SmCo5.[1][2]
Samarium–cobalt magnets are generally ranked similarly in strength to neodymium magnets,[3] but have higher temperature ratings and higher coercivity.