We demonstrate the formation of magnetic nanostripes on the surface of Fe52Al48 induced by nanosecond pulsed laser irradiation and investigate their magnetic properties. The magnetic stripe consists of a disordered A2 phase of Fe-Al alloys with Al-oxide along the [110] direction on the (111)-oriented plane. According to the focused magneto-optical Kerr effect measurement, the coercive force of the magnetic stripe obeys the 1/cos theta law, where theta is the field rotation angle estimated from the stripe direction. Also, the jump field can be observed in the magnetic hysteresis loop. These results indicate that the magnetization reversal in the magnetic stripe originates from the domain pinning, showing that the magnetization rotates incoherently.
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机译：我们证明了纳秒脉冲激光辐照在Fe52Al48表面形成磁性纳米带，并研究了它们的磁性。磁条由（111）定向平面上的[110]方向上具有Al-氧化物的Fe-Al合金的A2无序相组成。根据聚焦的磁光Kerr效应测量，磁条的矫顽力服从1 / cos theta律，其中theta是从磁条方向估计的场旋转角。同样，可以在磁滞回线中观察到跳跃场。这些结果表明，磁条中的磁化反转起源于畴钉扎，表明磁化不相干地旋转。
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