Nd^(3+)的稳定能与晶场参数及磁交换作用的关系

Relation Between Stabilization Energy,Crystal Field Coefficient and the Magnetic Exchange Interaction for Nd^(3+)

基于单离子模型,通过对Nd3+磁晶各向异性哈密顿数值的求解,研究了温度趋于0 K时,Nd3+离子稳定能与晶场参数及磁交换作用的关系.结果表明,对于强磁物质(如NdCo5,Nd2Co17,Nd2Fe14B等),Nd3+贡献的稳定能与晶场参数B20近似成正比,而对磁交换作用的变化不敏感.

Based on a single-ion model,Hamiltonian form about magnetocrystalline anisotropy for Nd^3＋ ion is solved using the numerical method.The relation between the stabilization energy,crystal field coefficient B02 and the magnetic exchange interaction is studied as temperature approaches to 0 K.The result shows that the stabilization energy contributed by Nd^3＋ is linear approximatively with crystal field coefficient B2^0,but being insensitive to magnetic exchange interaction for strong magnetic substances such as NdCo5,Nd2Co17 and Nd2Fe14B compounds.