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. DautainEcole 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)
Abstract
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.
© Les Editions de Physique 1993