|
|
Applied Physics 2026
低温钴纳米双环体系磁特性研究
|
Abstract:
通过蒙特卡罗方法(MC)与快速傅里叶变换微磁学(FFTM)方法模拟了50 K下钴纳米双环体系的磁化动力学，研究发现，低温时，系统呈现明显的双稳态特征，即“洋葱态”和“涡旋态”，磁滞回线清晰。研究成果对低温磁性纳米环体系计算和低温磁存储技术等领域的应用具有一定意义。
The magnetization dynamics of the cobalt dual-nanoring system at 50 K were simulated using the Monte Carlo (MC) method and the Fast Fourier Transform Micromagnetics (FFTM) method. The results indicate that at low temperatures, the system exhibits distinct bistable magnetic behavior, characterized by “onion” and “vortex” states, with well-defined hysteresis loops. These findings are significant for the study of low-temperature magnetic nanoring systems and their potential applications in areas such as low-temperature magnetic storage technologies.
| [1] | Medeiros, O., Castellani, M., Karam, V., Foster, R., Simon, A., Incalza, F., et al. (2026) A Scalable Superconducting Nanowire Memory Array with Row-Column Addressing. Nature Electronics, 9, 69-77. https://doi.org/10.1038/s41928-025-01512-0 |
| [2] | Latyshev, A., Semenov, A.G. and Zaikin, A.D. (2020) Superconductor-Insulator Transition in Capacitively Coupled Superconducting Nanowires. Beilstein Journal of Nanotechnology, 11, 1402-1408. https://doi.org/10.3762/bjnano.11.124 |
| [3] | 陈小勇, 刘晓丽, 樊海明. 磁性纳米材料的生物医学应用[J]. 物理, 2020, 49(6): 381-389. |
| [4] | Bahri, A.M. and Kamiyani, A.S. (2025) Harnessing Magnetic Properties for Precision Thermal Control of Vortex Domain Walls in Constricted Nanowires. Nanomaterials, 15, Article 372. https://doi.org/10.3390/nano15050372 |
| [5] | 张鑫源, 王雅静, 黄秋怡, 刘婕妤, 王文祥, 叶晴莹. 低温纳米环磁特性研究[J]. 应用物理, 2020(3): 186-190. |
| [6] | Lee, S. (2008) Electron Transport in Ferromagnetic Nanostructures. Doctoral Dissertation, Rice University. |
| [7] | Ye, Q., Chen, S., Liu, J., Huang, C., Huang, S. and Huang, Z. (2016) Study of Magnetic Properties for Co Double-Nanorings: Monte Carlo Simulation. Journal of Magnetism and Magnetic Materials, 408, 1-6. https://doi.org/10.1016/j.jmmm.2016.01.089 |
| [8] | 钟克华, 冯倩, 翁臻臻, 等. 快速傅立叶变换微磁学方法[J]. 计算物理, 2005, 22(6): 534-538. |
| [9] | Ye, Q., Chen, S., Zhang, J., Li, M. and Huang, Z. (2019) Numerical Simulation of Magnetic Properties for Co Asymmetric Nanorings. International Journal of Modern Physics B, 33, Article 1950155. https://doi.org/10.1142/s0217979219501558 |
| [10] | Castaño, F.J., Ross, C.A., Frandsen, C., Eilez, A., Gil, D., Smith, H.I., et al. (2003) Metastable States in Magnetic Nanorings. Physical Review B, 67, 184425-184430. https://doi.org/10.1103/physrevb.67.184425 |
| [11] | 林枝钦. 纳米环磁特性的数值计算[D]: [硕士学位论文]. 福州: 福建师范大学, 2009. |
| [12] | 叶晴莹. 纳米环磁化动力学研究[D]: [博士学位论文]. 福州: 福建师范大学, 2019. |
