论文标题
反相边界在磁铁矿薄膜中形成磁结构域中的作用
Role of anti-phase boundaries in the formation of magnetic domains in magnetite thin films
论文作者
论文摘要
反相边界（APB）是结构缺陷，已证明是导致在不同纳米结构中观察到的异常磁性行为的原因。了解它们的性质至关重要，对于通过以受控方式生长APB来调整磁性材料的性质至关重要，因为它们的密度在很大程度上取决于合成方法。在这项工作中，我们研究了它们对磁铁矿（fe $ _3 $ o $ _4 $）薄膜的影响，通过考虑一种原子旋转模型，将我们的研究重点放在了交换交互在APB界面中扮演的角色。我们得出的结论是，我们在此提出的模型很好地描述了该材料中实验中报告的主要非典型特征，从而证实了在APB中创建的新交换相互作用，因为负责与批量特性的偏差。
Anti-phase boundaries (APBs) are structural defects which have been shown to be responsible for the anomalous magnetic behaviour observed in different nanostructures. Understanding their properties is crucial in order to use them to tune the properties of magnetic materials by growing APBs in a controlled way since their density strongly depends on the synthesis method. With this aim, in this work we investigate their influence on magnetite (Fe$_3$O$_4$) thin films by considering an atomistic spin model, focusing our study on the role that the exchange interactions play across the APB interface. We conclude that the main atypical features reported experimentally in this material are well described by the model we propose here, confirming the new exchange interactions created in the APB as the responsible for this deviation from bulk properties.
