Samarium iron nitride (SmFeN) rare earth permanent magnet material is a new generation of rare earth permanent magnet material. It is mainly composed of rare earth element samarium (Sm) and transition metal iron (Fe), and nitrogen (N) element is introduced through nitriding process to form a compound with a specific crystal structure and excellent magnetic properties. Its chemical formula is usually expressed as Sm2Fe17N3. This material has the characteristics of high saturation magnetization intensity and high magnetocrystalline anisotropy field, showing unique advantages in the field of permanent magnet materials.

Compared with traditional NdFeB permanent magnet materials, SmFeN rare earth permanent magnet materials have certain advantages in some properties, such as its high theoretical magnetic energy product, which is expected to play an important role in some application scenarios with demanding magnetic properties; at the same time, the Curie temperature of SmFeN materials is relatively high, which may make it have better magnetic stability in high temperature environments.

SmFeN magnet powder is the basic raw material for preparing various SmFeN permanent magnet products, which is prepared by a specific powder metallurgy process. Injection molded bonded SmFeN magnets are made by mixing SmFeN magnet powder with an organic binder and forming magnet products of various shapes and sizes through an injection molding process. Nichia will showcase its entire portfolio of latest injection-bonded SmFeN magnetic materials that offer process and performance advantages over conventional rare earth materials at the Electric Motors, Drive Systems & Magnetics Conference (MDSM) 2025. By optimizing the SmFeN particle synthesis and coating processes, Nichia has been able to achieve an improved SmFeN PA12 magnetic material (AL16C001) with a Br exceeding 0.85T and a 50% increase in coercivity over the previous generation of magnetic materials.

Suzhou KP Chemical Co., Ltd can provide raw materials for the production of SmFeN permanent magnets such as Samarium oxide (Sm₂O₃), Samarium (Sm), Samarium nitrate hexahydrate (Sm(NO₃)₃ nH₂O) and Samarium chloride hexahydrate (SmCl₃ nH₂O). Please contact info@szkpchem.com or 086-18915544907.