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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.
Ferrofluid on glass, with a rare-earth magnet underneath. A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements.Developed in the 1970s and 1980s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets.
[11] [12] However, SmCo magnets contain a higher fraction of rare earth metals than NdFeB magnets, making them even more expensive and subject to the scarcity and environmental concerns of production; as such, SmCo magnets are now typically only used in specialty application cases where their particular temperature and coercivity advantages are ...
The academic magnet school, which currently offers grades 7-12, is one of the top-performing public middle and high schools in the state, according to U.S. News & World Report rankings. The plan ...
Neodymium magnets, another strong permanent magnet SmCo ( cobalt ); used for permanent magnets in guitar pickups, headphones, satellite transponders, etc. Scandium hydride ( hydrogen )
An important use of samarium is samarium–cobalt magnets, which are nominally SmCo 5 or Sm 2 Co 17. [104] They have high permanent magnetization, about 10,000 times that of iron and second only to neodymium magnets. However, samarium magnets resist demagnetization better; they are stable to temperatures above 700 °C (1,292 °F) (cf. 300–400 ...
The significance of (BH) max is that the volume of magnet necessary for any given application tends to be inversely proportional to (BH) max. This is illustrated by considering a simple magnetic circuit containing a permanent magnet of volume Vol mag and an air gap of volume Vol gap , connected to each other by a magnetic core .
Math, science, and electives in these areas are taught mainly only to students from the Academy. All other courses are taken with the high school along with students who are not in the magnet program. Candidates are accepted by the Academy of Science and Technology following application, testing, and essay reviewing.