Magnetic Domain Observation of Ferromagnetic Thin Films by Electron Holography

Abstract

Electron holography has recently made a remarkable progress due to the high coherence of an electron beam generated in a field emission electron microscope and almost reached the stage of practical reality.
Holographic interference electron microscopy was realized which gives information on magnetization distribution of specimen. Interference fringes in a contour map were proved to be along the in-plane magnetic lines of force when the thickness was uniform and the magnetic field was closed in the specimen.