Magnetic domain dynamics visualization

Issue title: Proceedings of the tenth International Symposium on Applied Electromagnetics and Mechanics ISEM-Tokyo

Article type: Research Article

Authors: Endo, Hisashi^{a; *} | Hayano, Seiji^a | Fujikura, Masahiro^b | Mogi, Hisashi^b | Kaido, Chikara^c | Saito, Yoshifuru^a

Affiliations: [a] Graduate School of Engineering, Hosei University, 3-7-2 Kajino, Koganei, 184-8584 Tokyo, Japan | [b] Steel Products Lab.-1, Steel Research Lab., Nippon Steel Co., 20-1 Shintomi, Futtsu, 293-8511 Chiba, Japan | [c] Yawata R & D Lab., Nippon Steel Co., 1-1 Tobihata, Tobata, Kitakyushu, 804-8501 Fukuoka, Japan

Correspondence: [*] Corresponding author: Hisashi Endo, Graduate School of Engineering, Hosei University, 3-7-2 Kajino, Koganei, Tokyo 184-8584, Japan. Tel.: +81 42 387 6200; Fax: +81 42 387 6200; E-mail: [email protected]

Abstract: This paper proposes a visualizing methodology of iron loss generation in a magnetic material using its visualized domain images, i.e., SEM, Kerr and Faraday effects. Based on the differential equations for dynamic image, the material behavior is visualized. The state transition matrix of the Helmholtz equation, for which is derived from a series of distinct visualized domain images representing magnetized state. This makes it possible to visualize the magnetizing mechanism as well as iron loss generation. In the present paper, visualization of iron loss generation on a grain-oriented electrical steel sheet is worked out using a set of SEM images. As a result of our image analysis, magnetization curves at the particular points can be estimated.

DOI: 10.3233/JAE-2002-474

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 15, no. 1-4, pp. 409-416, 2002