量子磁盘表面磁场分布模拟  

Magnetic Field Simulation for Quantum Magnetic Disk

作　　者：黄平[1] 韩满贵[1] 

机构地区：[1]电子科技大学微电子与固体电子学院,成都610054

出　　处：《电子科技大学学报》2010年第1期149-151,共3页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(60701016);电子科技大学青年基金(10810301030JX05017)的资助

摘　　要：量子磁盘由于记录点尺寸很小,用常规的磁场测量方法无法对其表面磁场分布数值图进行测试。为了证实量子磁盘的可行性,该文对量子磁盘表面的磁场分布用有限元软件进行模拟计算,在假设量子磁盘的磁化方向为水平磁化的前提下,得到了圆形量子点直径为20nm;量子点间距离为10nm;方形量子点边长为20nm,间距为20nm的情况下量子磁盘的二维表面磁场分布图,证实了其表面磁场分布具有明显的周期性,周期长度为量子点大小加上量子点间距离。并且所得到的磁场分布图为量子磁盘的理论研究提供了一定的参考数据。Because the small size of recording dots in quantum magnetic disk, it is very difficult to measure the magnetic field numerical distribution using the ordinary method. To prove the feasibility of quantum magnetic disk, magnetic-field distribution of quantum magnetic disk is calculated by f＇mite element method （FEM） software. On the assumption of the magnetization direction is horizontal, we obtain 2D magnetic field distribution of circle quantum dots with diameter 20 nm and distance 10 nm and that of square quantum dots with edge 20 nm and distance 20 nm. It is proved that the magnetic fields distribute periodically and the length of period is the length of dot plus the distance between the dots. This calculation could be a good reference for the reseach of quantum magnetic disk.

关 键 词：有限元法 磁场存储 磁记录 量子电子学 

分 类 号：TM144[电气工程—电工理论与新技术]