STROBOSCOPIC OBSERVATION OF DOMAIN MOTION ON COATED SI-FE SHEET USING SCANNING ELECTRON-MICROSCOPE

The direct observation of magnetic domains in coated grain oriented Silicon iron using a scanning electron microscope (S.E.M) has been possible since the mid seventies. But the use of S.E.M. has been limited to static observation and the attempts which have been made to observe domains dynamically have not visualised the true motion of the domains. The purpose of this paper is to show the use of a computer in a new technique to visualise the motion of the domains by capturing 64 images during a 50Hz magnetisation cycle. In addition, some image processing techniques to enhance the quality of these images have been mentioned. © 1990 IEEE