Off-axis electron holography observation of magnetic microstructure in a magnetite (001) thin film containing antiphase domains
Off-axis electron holography observation of magnetic microstructure in a magnetite (001) thin film containing antiphase domains
复制标题
DOI：
10.1103/physrevb.73.104432
复制
发表时间：
2006-03-01
影响因子：
3.7
通讯作者：
Eerenstein, W
中科院分区：
文献类型：
--
作者：
Kasama, T;Dunin-Borkowski, RE;Eerenstein, W
用离轴电子全息术在透射电子显微镜下研究了25 nm厚含反相畴界的自支撑磁铁矿（001）薄膜中的磁电阻态。所观察到的磁性微观结构是非常复杂的，包含畴壁和更精细尺度的磁性变化。这种复杂性部分归因于跨APB的交换耦合和薄膜的退磁能量之间的竞争。薄膜中磁感应强度的面内和面外分量的局部变化与APB的位置相关。
Magnetic remanent states in a self-supporting 25-nm-thick magnetite (001) film containing antiphase domain boundaries (APB's) are investigated using off-axis electron holography in the transmission electron microscope. The observed magnetic microstructure is highly complicated and contains both domain walls and finer-scale magnetic variations. This complexity is attributed in part to a competition between exchange coupling across APB's and the demagnetizing energy of the thin film. Local variations in both the in-plane and out-of-plane components of the magnetic induction in the film are correlated with the positions of the APB's.