| 含有缺口的Co纳米环的微磁学模拟 |
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| 引用本文： | 苗秀娟,王学凤,蓝志环. 含有缺口的Co纳米环的微磁学模拟[J]. 磁性材料及器件, 2012, 1(1): 24-26,77. DOI: 10.3969/j.issn.1001-3830.2012.01.005 |
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| 作者姓名： | 苗秀娟 王学凤 蓝志环 |
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| 作者单位： | 1.内蒙古民族大学物理与电子信息学院,内蒙古通辽,028043;2.吉林大学物理学院,吉林长春,130021;3.空军航空大学航空军械工程系,吉林长春,130022 |
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| 基金项目： | 内蒙古民族大学科研基金资助项目(MDX2010048) |
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| 摘 要： | 以Nipun Agarwal等人的实验结果为依据,用微磁学理论对外径为300nm、内径50nm、厚度不同、含有不同角度缺口的Co纳米环在不同方向(垂直和平行于盘的缺口方向)磁场作用下的磁化反转过程进行模拟.从剩磁态、剩磁比和矫顽力三个方面对模拟的结果进行分析比较.当磁场的方向垂直于缺口方向时,Co纳米环具有稳定的剩磁态,这与已有的研究结果一致.剩磁比随缺口角度的增大而增高,随厚度的增大无明显变化;矫顽力与磁体厚度和缺口角度的关系较为复杂.
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| 关 键 词： | Co纳米环 微磁学 剩磁态 剩磁比 矫顽力 |
Micromagnetic simulation on slotted Co nanorings |
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| MIAO Xiu-juan,WANG Xue-feng,LAN Zhi-huan. Micromagnetic simulation on slotted Co nanorings[J]. Journal of Magnetic Materials and Devices, 2012, 1(1): 24-26,77. DOI: 10.3969/j.issn.1001-3830.2012.01.005 |
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| Authors: | MIAO Xiu-juan WANG Xue-feng LAN Zhi-huan |
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| Affiliation: | 1.College of Physics & Electronic Information,Inner Mongolia University for the Nationalities,Tongliao 028043,China; 2.College of Physics,Jilin University,Changchun 130021,China; 3.Department of Aviation Ordnance Engineering,Air Force Aviation University,Changchun 130022,China |
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| Abstract: | Based on Nipun Agarwal’s experimental results,the magnetization reversal process of Co nanorings with different slotted angle(?) and different thickness subject to orthogonal directions magnetic field(perpendicular and parallel to the slot direction) was studied by using micromagnetic simulations.Comparison and analysis of the results in terms of remanent state,remanence ratio and coercive force were made,and it shows that Co nanorings have stable flux-closure remanent states when the magnetic field was perpendicular to the slot direction,which corresponds with informed experimental result.It also indicates that the remanence ratios increase with increasing slotted angle,but have no distinct changes with increasing the thickness;the relation of the coercive force to the thickness and slotted angle of Co nanorings is very complex. |
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| Keywords: | Co nanoring micromagnetic simulation remanent state remanence ratio coercive force |
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