NDLI: Dynamic losses and domain refinement in nanocrystalline tape wound cores

Content Provider	IEEE Xplore Digital Library
Copyright Year	2005
Abstract	Soft magnetic nanocrystalline toroidal tape wound cores of Fe/sub 73/Cu/sub 1/Nb/sub 3/Si/sub 16/B/sub 7/ with three different strengths of induced longitudinal anisotropy K/sub u/ have been studied. The power loss per cycle rises with increasing K/sub u/. The distinctions in the power losses of the cores are due to differences in the excess eddy current losses. Wall multiplication rises with decreasing strength of K/sub u/. An increasing number of active domains reduces the wall velocity, yielding smaller excess eddy current losses. The mean surface wall velocity approaches a limiting value with increasing frequency. This is connected to a change in the magnetization process from wall displacement to nucleation of patchy domains. The arising of patchy domains is discussed in terms of the induction rate and the influence of residual anisotropies.
Sponsorship	Magnetics Soc. of Japan Magnetics Soc. of the IEEE
Starting Page	43
Ending Page	44
File Size	209595
Page Count	2
File Format	PDF
ISBN	0780390091
DOI	10.1109/INTMAG.2005.1463450
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-04-04
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wounds Magnetic cores Anisotropic magnetoresistance Eddy currents Magnetic anisotropy Perpendicular magnetic anisotropy Magnetic domains Soft magnetic materials Toroidal magnetic fields Iron
Content Type	Text
Resource Type	Article

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