Vectorial magnetometry using magnetooptic Kerr effect including first- and second-order contributions for thin ferromagnetic films
Vectorial magnetometry using magnetooptic Kerr effect including first- and second-order contributions for thin ferromagnetic films
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DOI：
10.1088/0022-3727/44/26/265003
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发表时间：
2011-07
期刊：
影响因子：
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通讯作者：
T. Kuschel;H. Bardenhagen;H. Wilkens;R. Schubert;J. Hamrle;J. Pistora;J. Wollschläger
中科院分区：
文献类型：
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作者：
T. Kuschel;H. Bardenhagen;H. Wilkens;R. Schubert;J. Hamrle;J. Pistora;J. Wollschläger
本文介绍了一种利用磁光克尔效应的不同矢量测磁技术的新组合。实验数据的处理包含磁化曲线的线性和二次部分的分离和以克尔旋转为单位的磁化矢量的所有三个分量的确定，而不对饱和值进行任何归一化。实验过程包括测量与平行和垂直偏振入射光和外部磁场平行和垂直于光的入射平面。复克尔振幅的确定和数据处理的理论描述，在假设的入射角小，也为较大的入射角，使用适当的缩放到平均饱和值验证这种矢量磁力测量方法。在不存在磁化矢量的面外分量的情况下，完整的反转过程可以很容易地由单畴状态和畴分裂来重建和解释。测量程序和数据的处理演示了超薄外延Fe膜MgO（0 0 1）。
A new combination of different vectorial magnetometry techniques using magnetooptic Kerr effect is described. The processing of the experimental data contains the separation of linear and quadratic parts of the magnetization curves and determination of all three components of the magnetization vector in units of Kerr rotation without any normalization to the saturation values. The experimental procedure includes measurements with parallel and perpendicular polarized incident light and an external magnetic field parallel and perpendicular to the plane of incidence of light. The determination of the complex Kerr amplitude and the theoretic description of the data processing in assumption of small angles of incidence and also for larger angles of incidence using adequate scaling to the mean saturation value validate this vectorial magnetometry method. In the case of an absent out-of-plane component of the magnetization vector, the complete reversal process can easily be reconstructed and interpreted by monodomain states and domain splitting. The measurement procedure and the processing of the data are demonstrated for an ultra-thin epitaxial Fe film on MgO(0 0 1).