Goto Takayuki, Jeong Jong Seok, Xia Weixing, Akase Zentaro, Shindo Daisuke, Hirata Kei
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.
Microscopy (Oxf). 2013 Jun;62(3):383-9. doi: 10.1093/jmicro/dfs090. Epub 2013 Jan 4.
The magnetic field generated by a magnetic recording head is evaluated using electron holography. A magnetic recording head, which is connected to an electric current source, is set on the specimen holder of a transmission electron microscope. Reconstructed phase images of the region around the magnetic pole show the change in the magnetic field distribution corresponding to the electric current applied to the coil of the head. A simulation of the magnetic field, which is conducted using the finite element method, reveals good agreement with the experimental observations.
利用电子全息术评估磁记录头产生的磁场。将连接到电流源的磁记录头放置在透射电子显微镜的样品台上。磁极周围区域的重建相位图像显示了与施加到磁头线圈的电流相对应的磁场分布变化。使用有限元方法进行的磁场模拟结果与实验观测结果吻合良好。
