摘要
本文采用Monte Carlo方法,对铁纳米环的磁化动力学进行模拟。研究发现,铁纳米环的几何条件会影响到铁纳米环的磁化行为,同时,外场的变化会导致铁纳米环在磁化过程中出现不同的自旋组态,如洋葱态、涡旋态和反向洋葱态等。进一步的研究发现,铁纳米环涡旋态的稳定性及过渡态的数量与系统的内外半径明显相关。
Base on Monte Carlo method, the magnetic dynamics properties of Fe nanorings are studied. The study found that the magnetization behaviors of Fe nanorings are influenced by their geometry. At the same time, the change of the external field will lead to different spin configurations of the Fe nanoring in the magnetization process, such as onion-type-states, vortex-type-states and re-verse onion-type-states, and so on. Further study shows that the stability of the vor-tex-type-states and the number of transition states of the Fe nanoring are significantly related to the inner and outer radius of the system.
出处
《凝聚态物理学进展》
2020年第2期20-25,共6页
Advances in Condensed Matter Physics
基金
福建省自然科学基金(2017J01553),福建省本科高校教育教学改革研究项目(FBJG20180259),福建师范大学本科教学改革研究项目(I201803032),大学生创新创业训练计划项目(201910394013, cxxl-2019127, cxxl-2019s62)资助项目。
