| Monte Carlo Simulation of Magnetization Behaviour of Co Nanowires |
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| 作者姓名： | 钟克华 黄志高 冯倩 蒋丽钦 杨艳敏 陈志高 |
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| 作者单位： | Department of Physics, Fujian Normal University, Fuzhou 350007 |
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| 基金项目： | Supported by the National Key Basic Research and Development Programme of China under Grant No 2005CB623605, the National Natural Science Foundation of China under Grant No 10474037, and the National Natural Science Foundation of Fujian Province under Grant Nos E0320002 and A0510013. |
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| 摘 要： | Based on the Monte Carlo method, we simulate the magnetization curves with various magnetic field orientations for various single Co nanowires at room temperature. The simulated switching field as a function of angle between the field and the wire axis is consistent well with the experimental data. Correspondingly, the coercivity as a function of angle θ is presented, which together with the switching field plays an important role on explaining the magnetic reversal mechanism. It is found that the angular dependence of coercivity depends on the diameter of nanowires, and the coercivity and switching field versus θ deviate markedly from the prediction from the classical uniform rotation mode in the chain-of-sphere model. Furthermore, the magnetic reversal configurations display that magnetization reversal in the wires with small diameters is a nucleation-propagation process, and it is similar to the curling spread process in the larger wires.
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| 关 键 词： | 蒙特卡洛模拟 磁化行为 磁化曲线 纳米丝 |
| 收稿时间： | 2005-09-27 |
| 修稿时间： | 2005-09-27 |
Monte Carlo Simulation of Magnetization Behaviour of Co Nanowires |
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| ZHONG Ke-Hua, HUANG Zhi-Gao, FENG Qian, JIANG Li-Qin, YANG Yan-Min, CHEN Zhi-Gao.Monte Carlo Simulation of Magnetization Behaviour of Co Nanowires[J].Chinese Physics Letters,2006,23(1):200-203. |
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| Authors: | ZHONG Ke-Hua HUANG Zhi-Gao FENG Qian JIANG Li-Qin YANG Yan-Min CHEN Zhi-Gao |
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