用于时间分辨纳米自旋电子学的快速分钟磁场线圈
Fast minute magnetic field coil for time-resolved nanospintronics
摘要：
纳米自旋电子学和相关研究通常需要在所研究的平面结构的平面中施加快速上升的磁场脉冲。我们已经设计并制造了亚毫米级尺寸的线圈，能够提供高达~ 500 Oe的磁场的脉冲在样品的平面与上升时间的顺序为10 ns。将样品放置在线圈上方允许利用操纵器或光束容易地接近其表面，克尔显微镜。我们使用制造的线圈驱动磁畴壁在1 $μ$米宽坡莫合金线和测量磁畴壁速度作为施加的磁场的函数。
英文摘要：
Nanospintronic and related research often requires the application of fast rising magnetic field pulses in the plane of the studied planar structure. We have designed and fabricated sub-milimeter-sized coils capable of delivering pulses of the magnetic field up to ~ 500 Oe in the plane of the sample with the rise time of order of 10 ns. The placement of the sample above the coil allows for an easy access to its surface with manipulators or light beams for, e.g., Kerr microscopy. We use the fabricated coil to drive magnetic domain walls in 1 $μ$ m wide permalloy wires and measure magnetic domain wall velocity as a function of the applied magnetic field.
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