Download or read book Materials Optimization and GHz Spin Dynamics of Metallic Ferromagnetic Thin Film Heterostructures written by Cheng Cheng and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The experimental data are compared with our micromagnetic simulations based on the finite element analysis of the time-dependent LLG equation. We resolve standing spin wave modes in nanoscale Ni81 Fe19 thin film ellipses (1000 nm × 500 nm × 20 nm) with clear phase information to distinguish between degenerate eigenmodes with different symmetries for the first time. With the element-specific imaging capability of soft x-rays, spatial resolution up to 15 nm with improved optics, we see great potential for this technique to investigate functional devices with multiple FM layers, and provide insight into the studies of spin injection, manipulation and detection.