Wang Jieqiong, Yang Sen, Gong Junfeng, Xu Minwei, Adil Murtaza, Wang Yu, Zhang Yin, Song Xiaoping, Zeng Hao
School of Science, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, Collaborative Innovation Center of Suzhou Nano Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China.
Phys Chem Chem Phys. 2015 Apr 21;17(15):10250-6. doi: 10.1039/c5cp00181a.
Recently, magnetic nanotubes have attracted great attention owing to the advantages of tubular geometry. Of all the physical properties of magnetic nanotubes, the magnetic behavior plays a pivotal role in potential applications, particularly in biotechnology. Modeling magnetic nanotubes provides an effective way to determine the geometry dependent magnetic properties. In the present article, we model the nanotube as a chain of ellipsoid-rings; thus the magnetic behavior of nanotubes is simulated by the fanning rotation of magnetic moments. Based on this model, we further discuss the influence of tubular geometric parameters on the magnetic properties. The calculated magnetic properties of Fe, Co, Ni, Fe3O4 and CoFe2O4 nanotubes are all consistent with their experimental data. Consequently, our model provides an easy and general approach to magnetic nanotubes.
近年来，磁性纳米管因其管状几何结构的优势而备受关注。在磁性纳米管的所有物理性质中，磁行为在潜在应用中起着关键作用，尤其是在生物技术领域。对磁性纳米管进行建模为确定与几何结构相关的磁性提供了一种有效方法。在本文中，我们将纳米管建模为一系列椭球环；因此，纳米管的磁行为通过磁矩的扇形旋转来模拟。基于该模型，我们进一步讨论了管状几何参数对磁性的影响。计算得到的Fe、Co、Ni、Fe3O4和CoFe2O4纳米管的磁性均与实验数据一致。因此，我们的模型为研究磁性纳米管提供了一种简便通用的方法。
