Samarium–cobalt magnet

Samarium–cobalt (SmCo) magnets belong to the category of <a href="/facts/Rare-earth_magnet/Y5oKSjA7">rare-earth magnets</a> and are composed of <a href="/facts/Samarium/09K3kl93">samarium</a> (Sm), a <a href="/facts/Rare-earth_element/PQSUQumk">rare-earth element</a>, and <a href="/facts/Cobalt/gqhScEw4">cobalt</a> (Co), a <a href="/facts/Transition_metal/0slGWoLQ">transition metal</a>. They are among the strongest permanent magnets.
They were developed in the early 1960s based on work done by Karl Strnat at <a href="/facts/Wright-Patterson_Air_Force_Base/6EWFomSD">Wright-Patterson Air Force Base</a> and Alden Ray at the <a href="/facts/University_of_Dayton/JQAzLRds">University of Dayton</a>. In particular, Strnat and Ray developed the first formulation of SmCo5.
Samarium–Cobalt magnets are generally ranked similarly in strength to <a href="/facts/Neodymium_magnet/1LApJ5Xq">neodymium magnets</a>, but have higher temperature ratings and higher <a href="/facts/Coercivity/duBA23fB">coercivity</a>.

Samarium–cobalt magnet open-in-new

Samarium–cobalt magnet