Spatially resolved ferromagnetic resonance : Imaging of ferromagnetic eigenmodes
Spatially resolved ferromagnetic resonance : Imaging of ferromagnetic eigenmodes
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空间分辨铁磁共振：铁磁本征模式的成像
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
C. Back
中科院分区：
文献类型：
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作者：
A. Puzic;B. Waeyenberge;K. Chou;P. Fischer;H. Stoll;G. Schütz;T. Tyliszczak;K. Rott;H. Brückl;G. Reiss;I. Neudecker;T. Haug;M. Buess;C. Back
亚微米尺度上铁磁元素的快速磁化动力学目前引起了大量的科学兴趣。研究这类系统的铁磁本征模态，为追溯系统对底层微磁特性的动态响应提供了有价值的信息。第三代同步加速器源的固有时间结构允许在软x射线显微镜（横向分辨率低至20 nm）上进行时间分辨成像（时间分辨率：70-100 ps）磁化动力学。频闪泵和探针实验在加州伯克利ALS的全场磁透射x射线显微镜（XM-1，光束线6.1.2）上对微米尺寸的Permalloy样品进行。作为这些时域实验的补充，频域“空间分辨铁磁共振”（SR-FMR）技术应用于磁x射线显微镜。与时域测量反映宽带激励的磁化强度相反，频域SR…
Fast magnetization dynamics of ferromagnetic elements on sub-micron length scales is currently attracting substantial scientific interest. Studying the ferromagnetic eigenmodes in such systems provides valuable information in order to trace back the dynamical response to the underlying micromagnetic properties. The inherent time structure of third generation synchrotron sources allows for time-resolved imaging (time resolution: 70–100 ps) of magnetization dynamics at soft x-ray microscopes (lateral resolution down to 20 nm). Stroboscopic pump-and-probe experiments were performed on micron-sized Permalloy samples at a full-field magnetic transmission x-ray microscope (XM-1, beamline 6.1.2) at the ALS at Berkeley, CA. Complementary to these time-domain experiments a frequency-domain “spatially resolved ferromagnetic resonance” (SR-FMR) technique was applied to magnetic x-ray microscopy. In contrast to time-domain measurements which reflect a broadband excitation of the magnetization, the frequency-domain SR...