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Journal of Applied Physics / Volume 111 / Issue 7 / PROCEEDINGS OF THE 56TH ANNUAL CONFERENCE ON MAGNETISM AND MAGNETIC MATERIALS / Soft Magnetic Materials

J. Appl. Phys. 111, 07A302 (2012); http://dx.doi.org/10.1063/1.3670065 (3 pages)

Domain structure and magnetization loss in a toroidal core based on an Fe-based amorphous alloy

Daichi Azuma1,2, Ryusuke Hasegawa2, Shin Saito3, and Migaku Takahashi3

1Metglas Yasugi Works, Hitachi Metals, Ltd., Yasugi-shi, Shimane-ken 692-8601, Japan
2R&D, Metglas, Inc., Conway, South Carolina 29526, USA
3Electronic Engineering, Graduate School of Engineering, Tohoku University, Sendai, Miyagi 980-8579, Japan

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(Received 23 September 2011; accepted 7 October 2011; published online 7 February 2012)

By utilizing a wide-view Kerr-effect magnetic domain observation system designed for domain observation on curved surfaces, domain images were taken on the surface of a toroidal core based on an Fe-based amorphous alloy. The results of the observation are discussed in terms of Bertotti’s eddy-current loss model, helping to clarify the concept of magnetic objects proposed by the model.

© 2012 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL
  3. RESULTS AND DISCUSSIONS
  4. CONCLUSIONS

KEYWORDS, PACS, and IPC

Keywords

amorphous state, eddy current losses, iron alloys, Kerr magneto-optical effect, magnetic domain walls, magnetic leakage, magnetisation

PACS

  • 75.60.Ej

    Magnetization curves, hysteresis, Barkhausen and related effects

  • 75.60.Ch

    Domain walls and domain structure

  • 78.20.Ls

    Magneto-optical effects

International Patent Classification (IPC)

  • C22C38/00

    Ferrous alloys, e.g. steel alloys

  • H01F13/00

    Apparatus or processes for magnetising or demagnetising

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3670065

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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