Three-dimensional reconstruction of magnetic vector fields using electron-holographic interferometry

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Abstract
A method of reconstructing three-dimensional magnetic fields using electron-holographic interferometry is described. First, measured two-dimensional phase distributions are shown to reveal the projected magnetic flux structure of a microscopic object. Second, an algorithm for reconstructing the magnetic flux density in three dimensions from the phase distributions at different viewing directions has been developed and tested. An application to a barium ferrite particle is presented.