کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5425312 | 1395853 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Exploring nanomagnetism with soft X-ray microscopy Exploring nanomagnetism with soft X-ray microscopy](/preview/png/5425312.png)
Magnetic soft X-ray microscopy images magnetism in nanoscale systems with a spatial resolution down to 15Â nm provided by state-of-the-art Fresnel zone plate optics. X-ray magnetic circular dichroism (X-MCD) is used as the element-specific magnetic contrast mechanism similar to photoemission electron microscopy (PEEM), however, with volume sensitivity and the ability to record the images in varying applied magnetic fields which allows study of magnetization reversal processes at fundamental length scales. Utilizing a stroboscopic pump-probe scheme one can investigate fast spin dynamics with a time resolution down to 70Â ps which gives access to precessional and relaxation phenomena as well as spin torque driven domain wall dynamics in nanoscale systems. Current developments in zone plate optics aim for a spatial resolution towards 10Â nm and at next generation X-ray sources a time resolution in the fs regime can be envisioned.
Journal: Surface Science - Volume 601, Issue 20, 15 October 2007, Pages 4680-4685