原子与分子物理学报, 2005, 22 (1): 165, 网络出版: 2006-06-11
稀土合金RCo5中稀土离子的磁晶各向异性
On the magnetocrystalline anisotropy of rare earth in RCo5
稀土离子 磁晶各向异性 单粒子模型 晶场 各向异性能 Rare earth Magnetocrystalline anisotropy Crystal fields Single ion model Anisotropy energy
摘要
利用单粒子点电荷模型研究了RCo5中一系列稀土离子,包括轻离子Pr3+,Nd3+和重离子Tb3+,Dy3+,Er3+的磁晶各向异性.计算分析表明过渡族元素对晶场的贡献和晶场高阶项不可忽略,虑及过渡族元素和晶场高阶项对晶场的贡献后,得到的各稀土离子的磁晶各向异性常数及其随温度变化都与实验一致的结果,此结果还特别解释了以前不能解释的轻稀土离子Pr3+的易锥向取向.
Abstract
The original of the Magnetocrystalline Anisotropy of Rare Earth in RCo5 have been studied by the single ion (molecular field) approximation. Find the contribution of the neighboring CO ions to crystal fields and higher rank of crystal fields cant be neglected. We calculate the first and second order anisotropy constant K1,K2. The magitude of the calculated anisotropy constant is in agreement with the experimental data that are available at extended temperature.
孙峪怀, 刘福生. 稀土合金RCo5中稀土离子的磁晶各向异性[J]. 原子与分子物理学报, 2005, 22(1): 165. 孙峪怀, 刘福生. On the magnetocrystalline anisotropy of rare earth in RCo5[J]. Journal of Atomic and Molecular Physics, 2005, 22(1): 165.
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