Hard-X-ray magnetic holographic imaging using coherence and polarization properties of synchrotron radiation

利用硬X射线无透镜傅里叶变换全息术测量了位图案化超高密度数据记录介质中的磁畴结构，其空间分辨率可达10 nm以下。这项技术利用了同步加速器X射线的相干和偏振特性。成功地获得了具有30 nm分辨率的Co/Pt多层膜磁点的电荷密度图像。已经做了磁成像，但统计精度还有待提高。实验安排和分析方法的改进正在进行中。

Lensless Fourier transform holography measurement using hard X-rays was developed to observe the magnetic domain structure in bit-patterned media for ultradense data recording, with a sub-10-nm spatial resolution. This technique used the coherence and polarization properties of synchrotron X-rays. A charge density image of the magnetic dots made of Co/Pt multilayer was successfully obtained with a 30-nm resolution. Magnetic imaging has been done but the statistical accuracy should be improved. Refinements in the experimental arrangement and analysis method are ongoing.