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A cord pattern, where magnetic flux density distribution is separated into strong and weak parts like the magnetic domain, appears in magnetic anisotropic numerical calculation results. It is obtained in the strong magnetic anisotropic material. The same cord patterns are also found in the measured magnetic domain structure. Fractal structure of the cord patterns is also observed through the partial enlargement of the calculated cord patterns. The similar cord pattern resembled to the magnetically numerical calculation is also obtained in the structural numerical analysis of the metal crystal level. The fractal cord patterns emerge as a fundamental characteristic of anisotropy in numerical calculation and in physical observations.