金属永磁材料的前沿问题

The Frontier Problems of Metallic Permanent Magnetic Materials

在回顾磁能积的发展过程与分析决定磁能积因素的基础上，扼要叙述了进一步提高磁能积的可能性与途径。在未来10～20年内永磁材料仍然是极活跃的材料领域。永磁材料将在下列两方面有进一步发展：①研究与发展新型永磁材料，其中纳米晶复合交换耦合永磁材料最为引人瞩目；②改进与提高现有永磁材料的性能。

Based on the review of the development process of energy przoduct and the analysis of the factor determining energy product,the probability and the route of increasing energy product have been described briefly in this paper. Permanent magnetic material is still a more active field in the coming decade or more and will further develop in two directions: ①Researchand dovelopment of new type permanent magnetic materials, especially the nanocrystalline composite exchange coupling magnet; ② Improvement and enhancement of the performance of the present magnets.