论文标题
在相位晶体模型的振幅扩张中控制磁各向异性
Controlling magnetic anisotropy in amplitude expansion of phase field crystal model
论文作者
论文摘要
磁相晶（磁APFC）模型的振幅扩展可以在磁场的影响下对晶体结构的方便粗粒描述。考虑到高阶磁耦合项，我们证明了在这些模型中调整磁各向异性的可能性。这允许重现磁化的简单而艰难的方向。可以在不增加计算成本的情况下实现此类结果，从而模拟了铁磁材料中错位网络和微观结构的模拟。作为演示，我们报告了用Fe的磁各向异性的球形晶粒收缩的模拟。
The amplitude expansion for a magnetic phase-field-crystal (magnetic APFC) model enables a convenient coarse-grained description of crystalline structures under the influence of magnetic fields. Considering higher-order magnetic coupling terms, we demonstrate the possibility of tuning the magnetic anisotropy in these models. This allows for reproducing the easy and hard direction of magnetization. Such a result can be achieved without increasing the computational cost, enabling simulations of the manipulation of dislocation networks and microstructures in ferromagnetic materials. As a demonstration, we report on the simulation of the shrinkage of a spherical grain with the magnetic anisotropy of Fe.
