caa a22 4500 445382465 CHVBK 20180317143021.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10948-010-1000-9 doi (NATIONALLICENCE)springer-10.1007/s10948-010-1000-9 Energy Losses in Soft Magnets from DC to Radiofrequencies: Theory and Experiment [Elektronische Daten] [Fausto Fiorillo, Cinzia Beatrice] We summarize the phenomenology of energy losses in soft magnetic materials from quasi-static behavior to radiofrequency regimes. We show that an encompassing interpretative framework can be worked out by applying, under very general terms, the statistical theory of losses and the associated concept of loss separation. By this theory one can account for the dissipation phenomena both in metallic alloys, where they derive from the Joule effect, and in nearly insulating soft ferrites, where spin damping in the ferromagnetic precession is assumed to dominate. In all cases we distinguish between the viscous motion of the domain walls, having pure relaxation character, and the damped rotation of the spins inside the magnetic domains, which in ferrites is associated with ferromagnetic resonance and is described through the Landau-Lifshitz-Gilbert equation. These concepts are successfully applied, in particular, to the quantitative description of the frequency dependence of permeability and losses in amorphous Co-based alloys and sintered Mn-Zn and Ni-Zn ferrites, experimentally determined up to 1GHz. Springer Science+Business Media, LLC, 2010 Magnetic losses nationallicence Magnetization process nationallicence Soft magnets nationallicence Soft ferrites nationallicence Amorphous alloys nationallicence Fiorillo Fausto Istituto Nazionale di Ricerca Metrologica (INRIM), Strada delle Cacce 91, 10135, Torino, Italy aut Beatrice Cinzia Istituto Nazionale di Ricerca Metrologica (INRIM), Strada delle Cacce 91, 10135, Torino, Italy aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 559-566 1557-1939 24:1-2<559 2011 24 10948 https://doi.org/10.1007/s10948-010-1000-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-1000-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fiorillo Fausto Istituto Nazionale di Ricerca Metrologica (INRIM), Strada delle Cacce 91, 10135, Torino, Italy aut NATIONALLICENCE 700 1- Beatrice Cinzia Istituto Nazionale di Ricerca Metrologica (INRIM), Strada delle Cacce 91, 10135, Torino, Italy aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 559-566 1557-1939 24:1-2<559 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer