| 摘要 |
PURPOSE:To reduce the coercive force of a magnetic substance film having the column- like structure and to attain the laminated magnetic substance film suitable for a magnetic head material by a construction wherein a plurality of main magnetic substance films with high saturated magnetic flux density and containing Fe as a main ingredient and a plurality of intermediate magnetic substance films containing a metal element other than Fe as a main ingredient are laminated alternately. CONSTITUTION:A thickness of a main magnetic substance film 20 which contains Fe as a main ingredient and has high saturated magnetic flux density, high permeability as well as small magnetostriction, is specified to be 0.05-0.5mum or 0.05-0.3mum. These films 20 and intermediate magnetic substance films 21 formed of a metal element selected out of Co and Ni and with a thickness of 10-80Angstrom are laminated alternately on a non-magnetic substrate 23. In this way, a thickness of the film 21 is made very thin, thereby to fractionate a column-like crystal structure of the films 20. By so doing, magnetization running along the column-like structure perpendicularly to the film surface and magnetization getting less mobile at the interface of the column-like structure are directed toward inner surface of the film and becomes mobile in the film surface with the small magnetic field, thus resulting in the reduced coercive force. |
