Design of a vector magnet for the measurements of anisotropic magnetoresistance and rotational magneto-optic Kerr effect
Design of a vector magnet for the measurements of anisotropic magnetoresistance and rotational magneto-optic Kerr effect
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DOI：
10.1063/1.3698297
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发表时间：
2012-03-01
影响因子：
1.6
通讯作者：
Qiu, Z. Q.
中科院分区：
文献类型：
--
作者：
Li, J.;Jin, E.;Qiu, Z. Q.
矢量磁铁是由两个电磁铁设计和组装而成，在平面内产生任意方向的旋转磁场。这种设计允许磁场的旋转，而无需磁体的机械旋转。场旋转的快速（对于完整的360度旋转类似于10 s）和对机械振动的稳定性容易克服各向异性磁阻（AMR）和旋转磁光克尔效应（ROTMOKE）测量中的慢漂移效应。作为一个例子，我们应用这种矢量磁铁进行AMR和ROTMOKE测量的Fe（10 nm）/MgO（001）薄膜的外延生长。实验结果表明，该矢量磁体在AMR和ROTMOKE技术测量磁性薄膜磁各向异性方面具有良好的稳定性和高质量。(C)2012年美国物理学会。[http：//dx.doi.org/10.1063/1.3698297]
A vector magnet is designed and assembled with two electromagnets to produce a rotational magnetic field in any direction within a plane. This design allows a rotation of the magnetic field without a mechanical rotation of the magnets. The fast speed of the field rotation (similar to 10 s for a complete 360 degrees rotation) and the stability against mechanical vibration easily overcome the slow drifting effect in anisotropic magnetoresistance (AMR) and rotational magneto-optic Kerr effect (ROTMOKE) measurements. As an example we applied this vector magnet to carry out AMR and ROTMOKE measurements on epitaxial growth of Fe(10 nm)/MgO(001) films. The result demonstrates the stability and high quality of the vector magnet in determining the magnetic anisotropy of magnetic thin films using AMR and ROTMOKE techniques. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3698297]