The application of rare-earth permanent magnet material
The basic function of the rare-earth permanent magnet is that it can produce a invariableness magnetic field in a special space,and keep it without any power supply. There are many parameters to indicate the good or bad of the permanent magnet material,the most important is (BH)max.The bigger (BH) is ,there is more energy it can produce.Now the (BH)max of NdFeB has reached 50MGOe.Because of excellent characteristic of the (BH) and coercive force,it has made revolutionary change to the application of permanent magnet material,below in detail:

Electromechanical products
Permanent electrical products,especially micro-motor,the world output reached several hundred million per year.It is mostly used in motorcar, OA equipment and household appliance.Most of people use the high-power ferrite and rare-earth permanent magnet.
In the future,one of the biggest market for rare-earth permanent magnet in the car industry. Nd-Fe-B permanent magnet material has good capability,it is used in producing electrical products.When we make a car,we only have to use small motor to reduce the car weight and gas,make it more comfortable and secure,increase the whole capability,now we most use the startup motor.The motor is a quite important part to the car,the demand to the motor is increased year by year.Generally,one car owns 8-18 motors,high-level car owns 40-50 motors. The rare-earth permanent magnet of high (BH) can produce more power although it has small volume,therefore,it improved electric efficiency.Using rare-earth permanent magnet we can reduce the weight and size,so to save fuel and gain the agility in design.

The application of rare-earth permanent magnet material in medical treatment.

Magnetic selectors
There are two forms:permanent magnet and electromagnet.Permanent magnet magnetic selectors are widely used in ferrite,after the appearance of the rare-earth permanent magnet,it is turned out various permanent magnet magnetic selectors,especially in the middle & high magnetic field,we must use rare-earth permanent magnet.

Computer and peripheral equipment
In this field rare-earth permanent magnet material is widely used in VCM and data export printer.

Squawk box and earphone
Squawk box and earphone are the tradition application field for the permanent magnet.Squawk box has two form:outer magnetism and inner magnetism.Afer the appearance of the rare-earth permanent magnet material, squawk box is made to be quite small.Now, rare-earth permanent squawk box and earphone have been widely used in walkman.

Various meter
There are many sorts of meters which use permanent magnet,such as electric meter,arithmometer etc..

Microwave apparatus
In the field of microwave, microwave tube and milli-wave tube or amplifier needs steady magnetic field. Rare-earth permanent magnet is mostly used in the collection of the electron movement.