6533b827fe1ef96bd1285a83

RESEARCH PRODUCT

Measurement of magnetic fields and domain structures using a photoemission electron microscope

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Publisher Summary This chapter describes the theory and experiments on study of the domain structure of ferromagnets using various operation modes of a photoemission electron microscope (PEEM). The technique of PEEM allows observation of the domain boundaries on ferromagnetic surfaces arising from magnetic stray fields at definite conditions. In most cases, a very weak contrast due to the Lorentz force is formed. It can be measured by the use of digital methods of signal registration and data processing. From the form of the observed signal, conclusions about the shape of the stray field of the domain boundary can be drawn if there is additional information. The calculation of the image contrast depth of the domain boundaries of different types is given in the chapter. Experiments on application of the circularly polarized radiation for investigation of the ferromagnetic domains are described in the chapter. The chapter discusses the possibilities of the quantitative estimation of the magnetic stray fields on the surface of objects under study.