Remnant Magnetization Prediction in the Demagnetization Process by Orthogonal Magnetic Field

Calculated demagnetization curves agree well with the initial remnant magnetization curve. A simple analytical expression was obtained from the curve by fitting the measured initial remnant magnetization data. Anhysteretic demagnetization was performed by applying an alternating step-ramped magnetic...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2011-10, Vol.47 (10), p.4360-4363
Main Authors: Kim, Ki-Chan, Yoon, Kwan-Seob, Yang, Chang-Seob, Shin, Kwang-Ho, Jeong, Hae-Yong, Kim, Young-Hak
Format: Article
Language:English
Subjects:
Alternating magnetic field
anhysteretic demagnetization
Cross-disciplinary physics: materials science
rheology
dc bias field
Demagnetization
Earth
Exact sciences and technology
Magnetic domains
Magnetic hysteresis
Magnetization
Magnetomechanical effects
Materials science
Other topics in materials science
Physics
remnant magnetization
Saturation magnetization
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Description
Summary:Calculated demagnetization curves agree well with the initial remnant magnetization curve. A simple analytical expression was obtained from the curve by fitting the measured initial remnant magnetization data. Anhysteretic demagnetization was performed by applying an alternating step-ramped magnetic field sequence and the vertical dc bias field, simultaneously. The influence of the vertical bias magnetic field on anhysteretic demagnetization was prominent when the amplitude of the alternating magnetic pulse was large enough to saturate the magnetization of the object. The magnetic field due to the vertical remnant magnetization could be estimated by Langevin function with parameters of ξ and H MSrem .
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2011.2157812