Rare earth elements are a group of 17 metallic elements, including fifteen lanthanide elements on the periodic table, as well as scandium and yttrium. They are essential components of over 200 widely used products, especially high-tech consumer products such as cellular phones, computer hard drives, electric and hybrid vehicles, as well as flat panel displays and televisions. Important national defense applications include electronic displays, guidance systems, lasers, radar, and sonar systems. Although the amount of rare earth elements used in a product may not be an important component of its weight, value, or volume, rare earth elements are necessary for equipment operation. For example, magnets made of rare earth elements typically only account for a small portion of the total weight, but without them, the spindle motors and voice coils of desktop and laptop computers would not be possible.

What are the elements used to manufacture permanent magnets?

Including samarium, neodymium, praseodymium, terbium, and dysprosium elements.

neodymium

What is the content of rare earth elements in magnets?

Magnets made of rare earth elements are what we call rare earth magnets, including neodymium iron boron and samarium cobalt, which contain neodymium and samarium in the rare earth element. Ferrite is not a rare earth magnet because it does not contain rare earth elements and its magnetism is not as strong.

Neodymium iron boron magnets contain rare earth elements neodymium and dysprosium. Neodymium accounts for 29.32.5%, dysprosium accounts for 0.6-1.2%, and in many applications, the average content of rare earth metals is 31%.

The samarium cobalt magnet contains rare earth element samarium (Sm), accounting for approximately 23-28% of the content.