Energy dissipation in single-domain ferromagnetic nanoparticles: Dynamical approach
作者： T. V. Lyutyy , S. I. Denisov , A. Yu. Peletskyi , C. Binns
DOI: 10.1103/PHYSREVB.91.054425
关键词: Magnetic field 、 Single domain 、 Physics 、 Landau–Lifshitz–Gilbert equation 、 Magnetic moment 、 Field (physics) 、 Linear polarization 、 Dissipation 、 Amplitude 、 Condensed matter physics
摘要: We study, both analytically and numerically, the phenomenon of energy dissipation in single-domain ferromagnetic nanoparticles driven by an alternating magnetic field. Our interest is focused on power loss resulting from Landau-Lifshitz-Gilbert equation, which describes precessional motion nanoparticle moment. determine as a function field amplitude frequency analyze its dependence different regimes forced precession induced circularly linearly polarized fields. The conditions to maximize heating are also analyzed.
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