Super magnet
A super magnet has an another name that is a neodymium magnet.
Neodymium magnets, also called as “NdFeB magnets”, “Neo magnets”, or “rare earth magnets”, They are permanent magnets made of neodymium, iron, and boron. A super magnet is the strongest permanent magnet known at present because of very high magnetic properties, and is widely used in various applications.
The magnetic force of super magnets are affected by magnet grades. shapes and sizes. temperature and magnetized directions.
Grade of of Super Magnets
There are many grades for the super magnet such as N35.N52.45SH etc.Each grade has its magnetic properties such as Br.Hcj and （BH）max.Please check the test report of magnetic properties for super magnets below.
1.Remanence Br meaning
After the magnet is magnetized to saturation, the magnetic induction intensity retained when the external magnetic field is removed.
Higher Br.Bigger magnetic force.
2.Coercivity Hcj meaning
The strength of the reverse magnetic field required to reduce the magnetic induction intensity to zero.
The higher the coercivity. the stronger the magnet’s ability to resist demagnetization.
3.Magnetic energy product BH meaning
Represents the magnetic energy density established by the magnet in the air gap space.
The higher the energy product, the greater the magnet’s ability to store magnetic energy.
Shape and size of super magnets
Two super magnets have different magnetic force if they have different shapes and sizes . For example, the larger the pole area of a magnet, the stronger the magnetic field it produces.
Temperature of super magnets
The super magnets are more powerful at low temperatures and gradually lose their magnetic force when their maximum operating temperature is exceeded.
Magnetized direction of super magnets
The magnetic force is strongest along the direction of magnetization.
Coating of super magnets
A super magnet is plated in order to prevent corrosion.
Commonly the surface treatment of super magnets is nickel coating or zinc coating or epoxy coating.