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Spin Dynamics in Exchange—Spring Nanosystems: A Short Review

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Exchange spring magnetic materials are a specific class of media, which consist of a hard and a soft magnetic component. One of the fundamental interests in these materials is their ability to maintain the excellent thermo-magnetic stability of the hard ferromagnetic phase. The addition of a soft magnetic phase will allow the reduction and to a certain extent, the tailoring of the reversal or switching field for such a system. Such materials are of fundamental interest in the magnetic recording industry and in particular the advent of perpendicular media. In this review we concentrate on the dynamic magnetic processes, such as magnetization reversal and precessional motion, associated with these materials. We consider the theoretical aspects, which are of importance in the description of the magnetization processes as well as experimental studies in exchange coupled media.
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Keywords: EXCHANGE COUPLED FERROMAGNETIC LAYERS; EXCHANGE SPRING MAGNETS; FERROMAGNETIC RESONANCE; SPIN DYNAMICS

Document Type: Review Article

Publication date: August 1, 2011

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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