Rare Earth Magnet: are strongest magnetic materials available today in the world! Its name "rare earth magnets" comes from the Rare Earth Elements, such as Neodymium, Samarium and others, which are contained in the chemical composition of rare earth alloys. The first generation of rare-earth permanent magnetic material ( SmCo5) alloy was developed in 1960's, energy product is about 18 MGOe; the second generation (Sm2Co17) is developed during 1970's, energy product is about 30 MGOe; the third generation(Nd2Fe14B) was successfully developed in 1980's, energy product can reach 35 MGOe. Now, we can produce NdFeB magnet with energy product as high as 52 MGOe. Main application of Rare-Earth Magnets With excellent magnetic characteristics, rare earth magnets, especially NdFeB magnet, are widely used in industry, such as automotive, telecommunications, data processing, consumer electronics, electronics and instrumentation, astro and aerospace, biosurgical and industrial applications such as Dc motors, robotics and magnetic separators. Many of these are capable of substantial further growth. A particularly promising area is the use of permanent magnets in medicine and a potentially major use could be in magnetic resonance imaging (MRI) systems. Servo and linear drives also constitute strong growth areas, particularly in industrial robots where high performance, high torque motors are required. Another strong influence on the growth of NdFeB-type magnets has been the huge expansion in the use of mobile phones.
