High-amplitude precession and dynamic unsusceptibility of magnetic moments of a two-layer film |
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Authors: | D I Sementsov A M Shutyi |
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Institution: | (1) Ulyanovsk State University, ul. Tolstogo 42, Ulyanovsk, 432700, Russia |
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Abstract: | The precession motion of magnetization in a longitudinal alternating magnetic field for a system of two antiferromagnetically coupled magnetoactive layers is studied. New dynamic modes characterized by large precession amplitudes and doubling of the period are found. The modes can be efficiently controlled using an external magnetic bias field. A new effect consisting in the unsusceptibility of a magnetic subsystem to excitation by an alternating field has been revealed. |
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