[en] Photoelectron emission microscopy (PEEM) is applied on iron meteorite to understand the magnetic and metallographic properties from viewpoint of materials science for the first time. We find a unique magnetic domain structure, which forms 'head-on' coupling over the interface between α and γ lamellae. Such a magnetic domain structure is unlikely in any synthetic Fe-Ni alloys. Micromagnetics simulation reasonably explains that the formation of magnetic domains structure is induced by the L1₀-type FeNi (tetrataenite) phase segregated at the boundary. (author)