Imaging spiral magnetic domains in Ho metal using circularly polarized Bragg diffraction
Imaging spiral magnetic domains in Ho metal using circularly polarized Bragg diffraction
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DOI：
10.1063/1.1688252
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发表时间：
2004-06-01
影响因子：
3.2
通讯作者：
Srajer, G
中科院分区：
文献类型：
--
作者：
Lang, JC;Lee, DR;Srajer, G
我们用圆偏振X射线对金属Ho单晶中的螺旋磁畴结构进行了成像。在这些结构中，磁化方向在形成螺旋的连续原子层之间旋转。在磁性布拉格衍射峰，圆偏振X射线对这种螺旋的左旋(即右旋或左旋)很敏感。通过相位延迟光学反转入射光束的螺旋度，并测量布拉格散射的差值，可以得到反手利手区域之间的对比度。(C)2004年美国物理研究所。
We have used circularly polarized x rays to image the spiral magnetic domain structure in a single crystal of Ho metal. In these structures, the magnetization direction rotates between successive atomic layers forming a helix. At magnetic Bragg diffraction peaks, circularly polarized x rays are sensitive to the handedness of such a helix (i.e., either right or left handed). By reversing the helicity of the incident beam with phase-retarding optics and measuring the difference in the Bragg scattering, contrast between domains of opposing handedness can be obtained. (C) 2004 American Institute of Physics.