论文标题
磁性域壁固定在钴铁氧体微观结构中
Magnetic domain wall pinning in cobalt ferrite microstructures
论文作者
论文摘要
通过X射线磁性圆形二科和光发射显微镜，低能量电子显微镜和原子力显微镜结合了X射线磁性圆形二色症，对非化学计量钴铁氧体微米晶体进行了详细的相关结构，磁和化学分析。纳米级处的矢量磁化是从不同的X射线入射角度获得的，并与微磁模拟进行了比较，从而揭示了固定磁性域壁的缺陷。对不同类型的缺陷和域壁位置的比较表明，这些微晶中的钉子的主要来源是岛屿下方的基板台阶在尖晶石中诱导的线性结构缺陷。
A detailed correlative structural, magnetic and chemical analysis of non-stoichiometric cobalt ferrite micrometric crystals was performed by x-ray magnetic circular dichroism combined with photoemission microscopy, low energy electron microscopy, and atomic force microscopy. The vector magnetization at the nanoscale is obtained from magnetic images at different x-ray incidence angles and compared with micromagnetic simulations, revealing the presence of defects which pin the magnetic domain walls. A comparison of different types of defects and the domain walls location suggests that the main source of pinning in these microcrystals are linear structural defects induced in the spinel by the substrate steps underneath the islands.
