| 摘要 |
PROBLEM TO BE SOLVED: To realize comparative miniaturization, while improving the strength against impact load. SOLUTION: This magnetic core member for a radiowave clock is constituted of an amorphous laminate 23, in which a plurality of amorphous foils 23a having magnetism are laminated. A part of the laminate 23, around which part a coil 26 is wound is covered with an insulating film 24. The amorphous laminated foil 23a is annealed. The insulating film 24 has thermal resistance, and the plural amorphous foils 23a are annealed respectively in the state that the laminate 23 is coated with the insulating film 24. The plural amorphous foils 23a are bonded to each other and laminated. After the plural amorphous foils 23a are bonded with each other by using thermosetting plastics, the plural amorphous foils 23a are annealed respectively. The coil 26 is wound around the part except both ends of a magnetic core member 22, an antenna 21 for a radiowave clock is formed, and a radiowave clock is obtained by using the antenna 21. |
