TY - JOUR AU - Pylypovskyi, O. V. AU - Sheka, D. D. AU - Kravchuk, V. P. AU - Gaididei, Yu. B. AU - Mertens, F. G. PY - 2018/10/10 Y2 - 2024/03/29 TI - Mechanism of Fast Axially Symmetric Reversal of Magnetic Vortex Core JF - Ukrainian Journal of Physics JA - Ukr. J. Phys. VL - 58 IS - 6 SE - Nanosystems DO - 10.15407/ujpe58.06.0596 UR - https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018330 SP - 596 AB - <p>The magnetic vortex core in a nanodot can be switched by an alternating transversal magnetic field. We propose a simple collective coordinate model, which describes the comprehensive vortex core dynamics, including the resonant behavior, weakly nonlinear regimes, and reversal dynamics. A chaotic dynamics of the vortex polarity is predicted. All analytical results are confirmed by micromagnetic simulations.</p> ER -