On the Maze Domain of Silicon-Iron Crystal (I)

By using powder pattern technique, the maze-like domain which appears on the mechanically polished surface of Si–Fe crystal was examined. The maze domain was found to be a sort of the closure domain, which transports the magnetic flux of the underlying domains. It was also found that the boundaries between these domains are zigzag-shaped. This is interpreted as a general character of 90° wall. The agreement between theory and experiment is good. The degree of zigzag depends also upon the magnitude of the internal stress. From this relation the internal stresses up to 360 kg/mm 2 was found in the vicinity of the scratch.