Abstract
Spin dynamics in ferromagnetic thin films, nanostructures, and heterostructures have drawn significant attention due to the application potential in various magnetic devices and the fundamental physics involved in it. In this book, we have described, in reasonable detail, the spin dynamics in various systems starting from its historical evolution. We reviewed experimental and theoretical results related to the ultrafast demagnetization, relaxation, magnetization precession, and magnetic damping in ferromagnetic metallic thin films, bilayers, and nanostructures with a particular focus on these systems when excited by femtosecond (fs) optical pulses. In order to better understand the experimental techniques, theoretical backgrounds of magnetization dynamics are discussed.
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