电负性、原子赝势半径与稀土永磁材料  

Electronegativity, Atomic Pseudoradii and Rare Earth Permanent Magnet Materials

作　　者：蒋建生[1] 杜红林[1] 张文勇[1] 

机构地区：[1]北京大学物理学院

出　　处：《中国稀土学报》2003年第3期287-290,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家863项目(2001AA320401)

摘　　要：对于稀土永磁材料,定义了稀土元素与其他元素之间的加权平均电负性差P和加权平均原子赝势半径差Q;计算了1∶5型RE Co永磁材料、2∶17型RE Co永磁材料、Nd Fe B系列以及双相纳米晶复合材料等具有较好磁性能的稀土永磁材料的P和Q值点;计算结果表明,这些P和Q值点基本上分布在一段特定的区域内。The definition of weighted average differences P of electronegativities and Q of atomic pseudoradii between rare earth and other elements was introduced in respect of rare earth permanent magnet materials. The P,Q values of the materials with good magnetic properties were calculated. These rare earth permanent magnet materials include 1∶5 type RECo series, 2∶17 type RECo series, NdFeB series and nanocrystalline composite exchanging magnets. These P,Q values are found to be distributed into a specific range shown in this paper.

关 键 词：凝聚态物理 永磁材料 电负性 原子赝势半径 稀土 

分 类 号：O482.54[一般工业技术—材料科学与工程]