J. Phys. III France
Volume 3, Numéro 6, June 1993
Page(s) 1075 - 1081
DOI: 10.1051/jp3:1993183
J. Phys. III France 3 (1993) 1075-1081

Visualization of magnetic domains on power Mn-Zn ferrites using longitudinal Kerr effect

M. Dautain

Ecole Supérieure d'Electricité, Service Electrotechnique et Electronique Industrielle, 91192 Gif/Yvette Cedex, France

(Received 26 May 1992, revised 3 November 1992, accepted 3 March 1993)

After a historical recall about the study of magnetic domains on polycrystalline soft power ferrites, this paper deals with the use of the longitudinal and transverse Kerr effect on these materials. The experimental requirements and the test bench are described. The first results are obtained with DC excitation. The interpretation of the images reveals that the magnetization varies according to two distinct mechanisms : the wall movement and the rotation of the magnetization.

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