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Magnetic Material

Magnetic materials are generally strong magnetic substance, it is old and widely used functionality materials, the magnetism of material was known and used 3000 years ago, for example natural magnets used as a compass in ancient China. Modern magnetic materials already widely used in our life, for example, permanent magnets were used in motors. Magnetic materials have a close relationship with automation,mechanical-electrical integration etc.

According to demagnetized easily or not, there are two families, one is a soft magnetic material which easily demagnetized, the other one is a hard magnetic material which is difficult to be demagnetized, which also called permanent magnet material.The remanence of soft magnetic material is lower, while remanence of hard magnetic material is higher.

The experiment shows any substance can be more or less magnetized by external magnetic field, just magnetic intensity different. According to the features performance in the external magnetic field, materials can be classified as paramagnetic materials, diamagnetic materials, ferromagnetic materials, ferrimagnetic materials and anti-magnetic materials. Paramagnetic materials and diamagnetic materials are known as weakly magnetic materials, while ferrimagnetic materials known as strong magnetic materials.

We-Meank Magnetics just supply hard magnetic materials, which can permanently keep the magnetism after magnetized. So it also called as permanent magnetic materials. For permanent magnetic materials, after magnetized by external magnetic field, they can still keep most of the magnetism even if acted on reversing magnetic field. The requirements for such magnetic materials are high remanence(Br), strong coercive force(Hcb) and high maximum magnetic energy(BHmax).

Hard magnetic materials usually mean strong magnetic products and magnets. Hard magnets were classified according to use as below: hard ferrite magnets or ceramic magnets,  NdFeB magnets(including sintered NdFeB magnets and bonded NdFeB magnets), SmCo magnets, AlNiCo magnets and FeCrCo magnets, and flexible magnets(rubber magnets). Ferrite magnets are non-metal permanent magnets, others are metal permanent magnets. SmCo magnets and NdFeB magnets are rare earth magnets.

China, with its abundant rare earth reserves and resources(80% rare earth resources are located in China), has emerged as the world's leading magnetics and magnetic materials manufacturer.

There are many applications for permanent magnets:

1. Based on electromagnetism action principle: loudspeaker, microphone, electricity meter, electric machine, transducer etc.
2. Based on magnetic electricity action principle: magnetoresistive device.
3. Based on magnetic force principle: magnetic separators, magnetic chucks, magnetic seals, magnetic toys, packing magnets, magnetic mineral separation etc.
Other application aspects, such as magnetic therapy, magnetized water etc.

  • Neodymium/NdFeB Magnets

    Neodymium-iron-boron magnets short as Nd-Fe-B magnets, NIB magnets, neo magnets or neodymium magnets. Following called as NdFeB magnets or neodymium magnets.As a kind of rare earth magnets,neodymium m...

  • SmCo Magnets

    The same as neodymium magnets, Samarium Cobalt magnets are also rare earth permanent magnets,which short as SmCo magnets. It is alloy of Samarium, Cobalt and other rare earth elements. SmCo permanent ...

  • Ferrite/Ceramic Magnets

    Hard ferrite magnets belong to sintered permanent magnetic material, which made from oxide iron,barium and strontium carbonate by ceramic processing technology, just because of the processing method ,...

  • AlNiCo Magnets

    AlNiCo magnet is the earliest developed permanent magnetic material, it is alloy of Al,Ni,Co,Fe and other rare metal element. AlNiCo permanent magnets birthed in 30 years of 20 Century, its magnetic p...

  • Rubber/Flexible Magnets

    Brief introduction of rubber magnets(magnetic rubber):Rubber magnets sometimes called magnetic rubber. Magnetic rubber itself has no magnetism , the magnetism comes from filled magnetic powder. So the...

  • Bonded NdFeB Magnets

    Bonded magnet appeared around 1970s, when the SmCo magnets has reached the commercialization. The market situation of sintered permanent magnet is very good, but it is difficult to be machined into sp...