Micromagnetic simulations of 200-nm-diameter cobalt nanorings using a Reuleaux triangular geometry
Micromagnetic simulations of 200-nm-diameter cobalt nanorings using a Reuleaux triangular geometry
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DOI：
10.1016/j.jmmm.2005.12.002
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发表时间：
2006-10
影响因子：
2.7
通讯作者：
J. J. Torres-Heredia-J.;F. López‐Urías;E. Muñoz-Sandoval
中科院分区：
文献类型：
--
作者：
J. J. Torres-Heredia-J.;F. López‐Urías;E. Muñoz-Sandoval
利用微磁学模拟方法研究了横向尺寸为200 nm的Co纳米环的磁态和磁开关过程。我们提出了一种特殊的几何形状的纳米环，采用不同的三角形。联合收割机结合了等边三角形和圆形几何形状。我们通过改变纳米磁体的厚度和几何形状来研究单个纳米环的磁自旋配置。我们的研究结果表明，在大多数纳米磁体表现出的厚度小于4nm，存在一个洋葱型的状态，这之前的扭曲，双扭曲，或心形的状态，当研究磁化反转过程。磁滞回线和磁性状态发现在这些RT相比，圆形纳米环。
Using micromagnetic simulations, we investigated the magnetic states and switching processes of Co nanorings with lateral dimensions of 200nm. We propose a special geometry of nanorings that adopts different Reuleaux triangular shapes. Reuleaux's triangles (RT) combine both the equilateral triangle and circular geometries. We studied the magnetic spin configurations of individual nanorings by varying the thickness and geometry of the nanomagnets. Our results demonstrated that in most nanomagnets exhibiting a thickness of less than 4nm, there exists an onion-type state, which precedes either a twisted, double twisted, or cardioid state, when studying the magnetization reversal process. The hysteresis loops and magnetic states found in these RTs are compared with circular nanorings.