The 4th-gen permanent magnet SmFeN (Samarium-Iron-Nitrogen) rare earth permanent magnet material

Thanks to its excellent magnetic properties, neodymium-iron-boron (NdFeB), the 3rd-Gen rare earth permanent magnet material, has achieved widespread application. However, it also faces multiple challenges: not only do inherent defects such as low Curie temperature, large coercivity temperature coefficient, and poor chemical stability limit its application scenarios, but the large-scale consumption of rare earth resources like praseodymium (Pr), neodymium (Nd), dysprosium (Dy), and terbium (Tb) also draws significant attention to the risks of environmental damage and the sustainable supply of rare earth resources. Therefore, while practitioners in the magnetic material industry are committed to improving the performance of NdFeB-based permanent magnet materials, they are also actively researching the development of new-type permanent magnet materials to seek better material solutions. Against this backdrop, the custom super magnets - SmFeN (samarium-iron-nitrogen) rare earth permanent magnet material has emerged as the times require. We can call it custom super magnets

The custom super magnets - SmFeN (samarium-iron-nitrogen) rare earth permanent magnet material exhibits excellent performance in terms of corrosion resistance and oxidation resistance, and also has significant advantages in composition:

• Compared with samarium-cobalt (SmCo) magnets, it contains no strategic metals;

• Compared with neodymium-iron-boron (NdFeB) magnets, it does not require the use of high-cost rare earth elements such as praseodymium (Pr), neodymium (Nd), dysprosium (Dy), and terbium (Tb).

Specifically, samarium (Sm) has abundant reserves and a relatively low price. In terms of raw material costs, the price of samarium oxide (used in SmFeN magnets) is only about 1/5 of that of neodymium oxide.

With these advantages, custom super magnets - SmFeN is fully capable of becoming a new-type permanent magnet material. Its broad prospects have even made it a focal point in the research and development of permanent magnet materials at one point.

In recent years, with the vigorous development of the automotive industry and the accelerated transformation of electronic and electrical products toward miniaturization and light weighting, people have imposed increasingly stringent requirements on the performance of permanent magnets. These requirements not only demand that permanent magnets can withstand higher ambient temperatures but also set higher standards for their magnetic properties. The custom super magnets SmFeN (samarium-iron-nitrogen) rare earth permanent magnet material, which happens to possess both excellent temperature stability and outstanding magnetic properties, has seen its potential application value amplified once again—triggering a new upsurge in relevant research and development efforts.

On the other hand, the massive extraction and utilization of rare earth resources in recent years have led to a surge in their prices. Among these, the rising price of neodymium (Nd) has directly resulted in a significant increase in the production costs of NdFeB (neodymium-iron-boron) permanent magnet materials. In contrast, the rare earth element samarium (Sm) is in a state of relative surplus. Based on this, the research and development of the custom super magnets SmFeN rare earth permanent magnet materials not only helps reduce production expenses but also promotes the all-round utilization of rare earth resources.

The SmFeN samarium-iron-nitrogen rare earth permanent magnet material holds enormous potential to replace NdFeB permanent magnet materials, both in terms of magnetic performance and production costs. It is thus expected to become the much-anticipated fourth-generation rare earth permanent magnet material.

The custom super magnets - SmFeN (samarium-iron-nitrogen) rare earth permanent magnet material boasts prominent performance advantages. It not only exhibits high magnetic properties, high corrosion resistance, and excellent resistance to magnetic degradation at high temperatures but also features outstanding forming flexibility. These attributes enable it to play a role in multiple fields. In practical applications, the custom super magnets - SmFeN rare earth permanent magnet material is particularly suitable for scenarios that demand high stability, high corrosion resistance, and high mechanical properties under high-temperature environments—such as automotive motors, sensors, and aerospace sectors. It is believed that in the near future, the custom super magnets - SmFeN samarium-iron-nitrogen rare earth permanent magnet material will find even wider application in the industrial field.

Up to now, neodymium-iron-boron (NdFeB) permanent magnets remain the mainstream in the market. For more information, please click the link below.

https://www.slmmagnet.com/products/Magnetic-NdFeB/