| Magnetocrystalline anisotropy and spin reorientation transition of DyMn6Sn6 compound |
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| 引用本文： | 郭光华 秦江 张海贝. Magnetocrystalline anisotropy and spin reorientation transition of DyMn6Sn6 compound[J]. 中国有色金属学会会刊, 2007, 17(3): 514-518. DOI: 10.1016/S1003-6326(07)60125-3 |
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| 作者姓名： | 郭光华 秦江 张海贝 |
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| 作者单位： | School of Physics Science and Technology, Central South University, Changsha 410083, China |
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| 基金项目： | 国家自然科学基金;湖南省自然科学基金 |
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| 摘 要： | The spin-reorientation transition of intermetallic compound DyMn6Sn6 was investigated by applying the molecular field theory. The temperature dependence of easy magnetization direction of compound and the magnetic moment directions of Dy and Mn ions were theoretically calculated and they have good agreement with the experimental data. In the framework of single ion model, the temperature dependence of magnetocrystalline anisotropic constants K1R and K2R of Dy ion were also calculated. The results show that the fourth-order crystal field parameter, B 40, and the corresponding second-order magnetocrystalline anisotropic constant, K2R, of Dy ion must be taken into account in order to explain the spin-reorientation transition satisfactorily. The competition between K2R and K1R plays a key role in the spin-reorientation transition of DyMn6Sn6.
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| 关 键 词： | 金属特性 自旋处理 磁晶体 粒子转移 |
| 收稿时间： | 2006-09-05 |
| 修稿时间： | 2006-09-052006-12-04 |
Magnetocrystalline anisotropy and spin reorientation transition of DyMn6Sn6 compound |
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| GUO Guang-hua,QIN Jiang,ZHANG Hai-bei. Magnetocrystalline anisotropy and spin reorientation transition of DyMn6Sn6 compound[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(3): 514-518. DOI: 10.1016/S1003-6326(07)60125-3 |
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| Authors: | GUO Guang-hua QIN Jiang ZHANG Hai-bei |
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| Affiliation: | School of Physics Science and Technology, Central South University, Changsha 410083, China |
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| Abstract: | The spin-reorientation transition of intermetallic compound DyMn6Sn6 was investigated by applying the molecular field theory. The temperature dependence of easy magnetization direction of compound and the magnetic moment directions of Dy and Mn ions were theoretically calculated and they have good agreement with the experimental data. In the framework of single ion model, the temperature dependence of magnetocrystalline anisotropic constants K1R and K2R of Dy ion were also calculated. The results show that the fourth-order crystal field parameter, B4^0, and the corresponding second-order magnetocrystalline anisotropic constant, K2R, of Dy ion must be taken into account in order to explain the spin-reorientation transition satisfactorily. The competition between K2R and K1R plays a key role in the spin-reorientation transition of DyMn6Sn6. |
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| Keywords: | rare earth-transition metal compound spin-reorientation transition magnetocrystalline anisotropy |
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