纳米晶稀土永磁材料的制备和磁性  

Synthesis and Magnetic Properties of Nanocrystalline Rare-Earth Permanent Magnetic Materials

作　　者：沈保根[1] 张宏伟[1] 张文勇[1] 阎阿儒[1] 

机构地区：[1]中国科学院物理研究所,北京100080

出　　处：《中国稀土学报》2004年第1期28-33,共6页Journal of the Chinese Society of Rare Earths

基　　金：国家973项目(G1998061303);国家自然科学基金重点项目(59831010);国家自然科学基金面上项目(10274102)资助

摘　　要：介绍了纳米晶稀土永磁材料的制备和磁性方面的有关研究工作,主要内容有:低钕快淬Fe3B基钕铁硼新型纳米晶复合稀土永磁材料的相结构与磁性,快淬Pr2Fe14B/α Fe型纳米复合稀土永磁材料的微结构与永磁性,快淬Sm Co基稀土永磁材料的织构与磁各向异性的关系,以及纳米晶稀土永磁材料的矫顽力机制和模拟计算研究等。The research on the synthesis and magnetic properties of nanocrystalline rare-earth permanent magnetic materials in our group was reported. The focuses are as follows: phase-composition and magnetism of melt-spun Fe_3B-based alloys with a low content of Nd; microstructure and hard magnetic properties of melt-spun Pr_2Fe_(14)B/α-Fe nanocomposite ribbons; the relationship between texture and magnetic anisotropy of melt-spun Sm-Co based alloys; simulation of the demagnetization behavior and investigation of coercivity mechanism in nanocrystalline permanent magnets.

关 键 词：纳米晶稀土永磁材料 矫顽力 磁能积 稀土 

分 类 号：TM273[一般工业技术—材料科学与工程]