Magnetocrystalline anisotropy and spin reorientation transition of HoMn6Sn6 compound

作者：Guo Guang hua^*; Zhang Hai bei

来源：Journal of Alloys and Compounds, 2007, 429(1-2): 46-49.

DOI：10.1016/j.jallcom.2006.04.008

• rare earth-transition metal compound
• spin reorientation transition
• magnetocrystalline anisotropy

The spin reorientation transition of intermetallic compound HoMn6Sn6 has been investigated by applying the molecular field theory. The temperature dependence of easy magnetization direction of compound and the magnetic moment directions of Ho and Mn ions are theoretically calculated and have good agreement with the experimental data. In the framework of single ion model, the temperature dependence of magnetocrystalline anisotropic constants K-1R and K-2R of Ho ion has also been calculated. Our studies show that the fourth-order crystal field parameter B-4(0) and the corresponding second-order magnetocrystalline anisotropic constant K-2R of Ho ion have to be taken into account in order to explain the spin reorientation transition satisfactorily. The competition between K-2R and K-1R plays a key role in the spin reorientation transition of HoMn6Sn6.

• 出版日期2007-1-21
• 单位中南大学