Time resolved imaging of magnetic nanostructures with magnetic transmission soft X-ray microscopy

使用磁透射软 X 射线显微镜对磁性纳米结构进行时间分辨成像

• 批准号: 5374006
• 负责人: Dr. Peter Fischer
• 金额: --
• 依托单位: Max-Planck-Institut für Intelligente Systeme
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2005-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5374006?language=en
• 关键词: Time; resolved; imaging; magnetic; nanostructures

Magnetic transmission soft X-ray microscopy is a novel technique using X-ray magnetic circular dichroism as large contrast mechanism to image magnetic domain structures in ferromagnetic systems. It features element-specificity, a lateral resolution down to 25 nm and a high sensitivity to thin magnetic layers. Both systems with in-plane and out-of-plane magnetization can be recorded within varying external magnetic fields. Thus the switching behaviour of individual layers in magnetic elements can be addressed. The goal of this proposal is to implement the time structure of the synchrotron radiation light source by a stroboscopic imaging with a pump-probe technique. Thus dynamical processes in magnetically ordered multilayered and nanostructured elements can be studied. This will both provide new insight into fundamental questions but moreover in a technological context. The results obtained will be complimentary to other magnetic imaging techniques and will serve as high resolution experimental input to numerical simulations of fast switching processes.

磁性传输软X射线显微镜是一种使用X射线磁性圆形二色性的新技术，作为在铁磁系统中图像磁性域结构的大型对比度机制。它具有元素特异性，横向分辨率降至25 nm，并且对薄磁层的敏感性很高。平面内和平面外磁化的两个系统都可以在不同的外部磁场中记录。因此，可以解决磁元素中各个图层的开关行为。该提案的目的是通过使用泵探针技术的频镜成像实现同步子辐射光源的时间结构。因此，可以研究磁有序的多层和纳米结构元素中的动态过程。这两个都将提供有关基本问题的新见解，但在技术背景下。获得的结果将与其他磁成像技术相称，并将作为快速开关过程数值模拟的高分辨率实验输入。