A TMR stack or a GMR stack, ultimately formed into a sensor or MRAM element, include insertion layers of Fe or iron rich layers of FeX in its ferromagnetic free layer andor the AP1 layer of its SyAP pinned layer. In this structure, either the surface of the first support member for supporting the mold or the surface of the second support member for supporting the workpiece is smaller in area than both surfaces of the mold and the workpiece. To implement the system and the method for analyzing a result of clustering massive data, clustered data is divided into blocks.