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Applied Physics 2023
双层堆叠纳米环磁特性的研究
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Abstract:
基于蒙特卡洛(MC)方法与快速傅里叶变换微磁学(FFTM)方法，研究了厚度不同钴纳米环的磁化特性。模拟结果表明，纳米环堆叠时，系统的磁化过程存在“双稳态”特征，在磁化翻转过程中出现局部涡旋态，随着厚度的变化，系统的自旋组态出现了更为丰富的过渡态，整体的磁化过程更加复杂。
Based on Monte Carlo (MC) method and Fast Fourier transform micromagnetics (FFTM) method, the magnetization characteristics of cobalt nanorings with different thickness were simulated. The simulation results show that the magnetization process of the system is bistable, and the local vortex state appears in the magnetization reversal process. With the change of the thick-ness, the spin configuration of the system appears more abundant transition states, and the overall magnetization process becomes more complex.
| [1] | Hussain, B., Cottam, M.G. and Ge, B. (2022) Magnonic Bands in Periodic Arrays of Vertically-Stacked Cylindrical Magnetic Nanoelements. Solid State Communications, 342, Article ID: 114588.
https://doi.org/10.1016/j.ssc.2021.114588 |
| [2] | Saavedra, E., Riveros, A. and Palma, J.L. (2021) Effect of Nonuniform Perpendicular Anisotropy in Ferromagnetic Resonance Spectra in Magnetic Nanorings. Scientific Re-ports, 11, Article No. 14230.
https://doi.org/10.1038/s41598-021-93597-8 |
| [3] | Liang, Y., Li, L., Lu, M., et al. (2018) Comparative Inves-tigation of Sensing Behaviors between Gap and Lattice Plasmon Modes in a Metallic Nanoring Array. Nanoscale, 10, 548-555. https://doi.org/10.1039/C7NR07124H |
| [4] | Yannouleas, C., Romanovsky, I. and Landman, U. (2015) Transport, Aharonov-Bohm, and Topological Effects in Graphene Molecular Junctions and Graphene Nanorings. The Journal of Physical Chemistry C, 119, 11131-11142.
https://doi.org/10.1021/jp511934v |
| [5] | Ye, Q., Chen, S., Liu, J., et al. (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 |
| [6] | Rothman, J., Kl？ui, M., Lopez-Diaz, L., et al. (2001) Ob-servation of a Bi-Domain State and Nucleation Free Switching in Mesoscopic Ring Magnets. Physical Review Letters, 86, 1098-1101. https://doi.org/10.1103/PhysRevLett.86.1098 |
| [7] | Fan, H.-M., Olivo, M., Shuter, B., et al. (2010) Quantum Dot Capped Magnetite Nanorings as High Performance Nanoprobe for Multiphoton Fluorescence and Magnetic Resonance Imaging. Journal of the American Chemical Society, 132, 14803-14811. https://doi.org/10.1021/ja103738t |
| [8] | Farghadan, R., Saffarzadeh, A. and Semiromi, E.H. (2013) Magnetic Edge States in Aharonov-Bohm Graphene Quantum Rings. Journal of Applied Physics, 114, Article No. 214314. https://doi.org/10.1063/1.4842715 |
| [9] | Da, X.H., Li, R.N., Li, X., Lu, Y.S., Gu, F.F. and Liu, Y. (2022) Syn-thesis and Characterization of PEG Coated Hollow Fe3O4 Magnetic Nanoparticles as a Drug Carrier. Materials Letters, 309, Article ID: 131357.
https://doi.org/10.1016/j.matlet.2021.131357 |
| [10] | Wang, Y., Yu, C., Li, Y., et al. (2022) In Vivo MRI Tracking and Therapeutic Efficacy of Transplanted Mesenchymal Stem Cells Labeled with Ferrimagnetic Vortex Iron Oxide Nanorings for Liver Fibrosis Repair. Nanoscale, 14, 5227- 5238. https://doi.org/10.1039/D1NR08544A |
| [11] | Das, R., Masa, J.A., Kalappattil, V., et al. (2021) Iron Oxide Na-norings and Nanotubes for Magnetic Hyperthermia: The Problem of Intraparticle Interactions Nanomaterials, 11, Article No. 1380. https://doi.org/10.3390/nano11061380 |
| [12] | 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 No. 1950155.
https://doi.org/10.1142/S0217979219501558 |
| [13] | Ye, Q., Chen, S., Huang, S., et al. (2019) Magnetic Dynamic Properties of Defective Cobalt Nanorings: Monte Carlo Simulation. Journal of Magnetism and Magnetic Materials, 473, 301-305. https://doi.org/10.1016/j.jmmm.2018.10.038 |
| [14] | 钟克华, 冯倩, 翁臻臻, 黄志高. 快速傅立叶变换微磁学方法[J]. 计算物理, 2005, 22(6): 534-538. |
| [15] | 林枝钦. 纳米环的磁特性的数值计算[D]: [硕士学位论文]. 福州: 福建师范大学, 2009. |
| [16] | Castano, F.J., Ross, C.A., Frandsen, C., et al. (2003) Metastable States in Magnetic Nanorings. Physical Review B, 67, 184425-184430. https://doi.org/10.1103/PhysRevB.67.184425 |
| [17] | Bekaert, J., Buntix, D., Van Haesendonck, C., et al. (2002) Noninvasive Magnetic Imaging and Magnetization Measurement of Isolated Mesoscopic Co Rings. Applied Physics Letters, 81, 3413-3415.
https://doi.org/10.1063/1.1518564 |
