摘要
采用基于第一原理的全势能线性缀加平面波加局域轨道((L)APW+lo)方法对Nd(Fe,Si)11Cx化合物(x=0,2)的电子结构进行了计算,得到了化合物态密度和磁矩等信息.计算结果表明NdFe9Si2化合物中Si原子主要与4b和32i位Fe原子产生杂化,导致Fe原子磁矩减小.NdFe9Si2C2化合物C原子使32i位Fe原子磁矩进一步降低,同时减弱了Si原子的影响,使得4b位Fe原子磁矩增大.
Electronic structure of Nd(Fe, Si) 11 Cx compounds ( x = 0,2 ) are calculated by the lull-potential linearized augmented plane wave (LAPW) + local orbital (1o) based on standard APW and the generalized gradient approximation (GGA) method. The density of states (DOS) and the magnetic moments obtained by this work indicate that the Si atoms mainly hybridize with the Fe(4b) and Fe(321) which reduce the atomic magnetic moments of Fe and the C atoms in NdFe9Si2C2 reduce the Fe(321) magnetic moments farther, weaken the affects of Si and increase the Fe(4b) magnetic moments.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
2006年第6期1051-1055,共5页
Journal of Atomic and Molecular Physics
基金
中国工程物理研究院科学技术基金(20040863)