NDLI: Eddy Current Effects and Pinning Effects in Fe and Ni Single Crystals With Low Defect Densities

Content Provider	IEEE Xplore Digital Library
Author	Takahashi, S. Kobayashi, S.
Copyright Year	1965
Abstract	Effects of eddy currents and pinning due to dislocations on domain wall movement have been studied for single crystals of Fe and Ni metals using scaling rules in magnetic minor hysteresis loops. The minor-loop coefficients, obtained from power-law rules between the amplitude dependent parameters, increase due to plastic deformation at room temperature in both metals. However, the temperature dependence is quite different from each other. While for Fe metal the coefficients are almost constant above T = 200 K and increase remarkably with decreasing temperature below T = 200 K, the coefficients for Ni metal increase around T = 430 K, take a maximum, and abruptly decrease with decreasing temperature. The remarkable increase of the coefficients below T = 200 and 430 K observed in nondeformed Fe and Ni metals, respectively can be explained by the eddy current effects associated with the increase in electrical conductivity at low temperatures. On the other hand, for deformed Ni metal where the pinning effect is dominant, the maximum of the coefficients can be explained as being due to the temperature dependence of the magneto-crystalline anisotropy and magneto-striction.
Sponsorship	IEEE Magnetics Society
Starting Page	3859
Ending Page	3862
Page Count	4
File Size	149537
File Format	PDF
ISSN	00189464
Volume Number	44
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Eddy currents Iron Crystals Magnetic anisotropy Perpendicular magnetic anisotropy Temperature dependence Magnetic domain walls Magnetic domains Magnetic hysteresis Plastics minor loop Eddy current ferromagnetic materials magnetic hysteresis
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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