Analysis of Research Trends of NdFeB Nanocomposite Permanent Magnetic Material

Recent research progress in nanocomposite permanent magnetic materials is reviewed with special emphasis on the mechanism of coercivity.According to the effects of element addition and processing route on the improvement of the magnetic properties,the research trends of nanocomposite permanent magnetic materials have been analyzed simply: First,theoretical or experimental study of coercivity mechanism from different sides to improve the material coercivity;In addition,by doping or improving the micro-preparation process,the micro-crystalline structure of material will be improved as to achieve the ideal magnet structure as theoretical predictions on one hand;and the grain-oriented degree will be enhanced as to prepare the anisotropic magnets on the other hand.