| An Effective Three-Dimensional Micromagnetic Method and Its Application to Magnetic Tunnel Junctions |
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| 作者姓名： | 刘要稳 陈宇光 羊亚平 陈鸿 MartinsJ.L. |
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| 作者单位： | [1]DepartmentofPhysics,TongjiUniversity,Shanghai200092 [2]INESCMicrosystemsandNanotechnologies,RuaAlvesRedo19,1000Lisbon,Portugal |
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| 摘 要： | An effective three-dimensional micromagnetic method for predicting equilibrium configuration of magnetization states is presented with conjugate-gradient technique to minimize the total energy, which has a much faster convergence rate than that of the quasi-Newton method. As an application, magnetic tunnel junctions with pinholes in the ultrathin barrier are simulated. The calculated coupling field Hf increases with the pinhole density increase, corresponding to the decrease of barrier thickness. The free layer domain configuration of tunnel junction during the switching process is also demonstrated.
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| 关 键 词： | 三维微磁法 磁隧道结 周期平衡 准牛顿法 磁随机记忆存贮器 |
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