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Samarium-cobalt (SmCo) magnets are used in aerospace and defense due to their exceptional magnetic properties. [15] They are utilized in high-performance motors and actuators , precision sensors and gyroscopes , and satellite systems where stability and reliability are essential. [ 16 ]
The four primary permanent magnetic materials that are found in the vast majority of industrial applications are neodymium iron boron (NdFeB), samarium cobalt (SmCo), aluminum nickel cobalt (Alnico), and strontium carbonate-iron oxide (also known as “ceramic magnet”); furthermore, significant materials science research is ongoing into the ...
Samarium–cobalt magnets (chemical formula: SmCo 5), the first family of rare-earth magnets invented, are less used than neodymium magnets because of their higher cost and lower magnetic field strength. However, samarium–cobalt has a higher Curie temperature, creating a niche for these magnets in applications where high field strength is ...
The aircraft was envisioned as an uncrewed sailplane that would have an operating altitude of 73,000 ft (22,250 m), powered by a single Samarium–cobalt magnet electric motor, the first motor of its kind in the world. The aircraft would use no batteries and, instead, would descend at night from its operating altitude to about 10,000 ft (3,048 ...
These magnets are found in small motors, headphones, and high-end magnetic pickups for guitars and related musical instruments. [11] For example, they are used in the motors of a solar-powered electric aircraft , the Solar Challenger , and in the Samarium Cobalt Noiseless electric guitar and bass pickups.
Samarium–cobalt magnets are made from an alloy of samarium and cobalt, known for their high magnetic strength, excellent temperature stability and resistance to demagnetization. [4] They are often used in applications requiring powerful and stable magnets, such as in motors , aerospace , military equipment, and high-temperature environments.