论文标题
磁APFC建模以及磁结构相互作用对晶粒收缩的影响
Magnetic APFC modeling and the influence of magneto-structural interactions on grain shrinkage
论文作者
论文摘要
我们得出了捕获磁结构相互作用的基本物理学的相位场晶体（APFC）模型的振幅扩展。证明了由于磁化而引起的对称性破裂，并提供了BCC晶体的磁各向异性的表征。该模型可以对晶体结构进行方便的粗粒描述，特别是在考虑APFC模型的特征与具有不均匀空间分辨率的数值方法相结合时。通过解决矩阵中球形晶粒的收缩来表明这是一种原型系统，以证明不同磁性的影响。这些模拟是对APFC模型中铁磁材料中错位网络和微结构进行操作的概念证明。
We derive the amplitude expansion for a phase-field-crystal (APFC) model that captures the basic physics of magneto-structural interactions. The symmetry breaking due to magnetization is demonstrated, and the characterization of the magnetic anisotropy for a BCC crystal is provided. This model enables a convenient coarse-grained description of crystalline structures, in particular when considering the features of the APFC model combined with numerical methods featuring inhomogeneous spatial resolution. This is shown by addressing the shrinkage of a spherical grain within a matrix, chosen as a prototypical system to demonstrate the influence of different magnetizations. These simulations serve as a proof of concept for the modeling of manipulation of dislocation networks and microstructures in ferromagnetic materials within the APFC model.
