Body with magnetic film attached and manufacturing method therefor

Abstract

A fabrication method for fabricating a magnetic film provided body includes preparing a base body and forming a magnetic film on the base body. The magnetic film includes organic film(s) and ferrite film(s) alternately layered. The formation of the magnetic film alternately includes forming a ferrite film through a ferrite plating method, the ferrite film having a thickness of 20 μm or less, and forming an organic film having a thickness of 0.1 μm to 20 μm, both inclusive, and a ratio t/E of 0.025 μm/GPa or more, where “t” indicates the thickness of the organic film while “E” indicates Young's modulus of the organic film.

1 . A fabrication method of a magnetic film provided body comprising:
 preparing a base body and forming a magnetic film on the base body, the magnetic film comprising at least one organic film and at least one ferrite film alternately layered,   wherein the formation of the magnetic film alternately out comprises:   forming a ferrite film through a ferrite plating method, the ferrite film having a thickness of 20 μm or less; and   forming an organic film, the organic film having a thickness of 0.1 μm to 20 μm, both inclusive, the organic film having a ratio t/E of 0.025 μm/GPa or more, where “t” indicates the thickness of the organic film, and “E” indicates Young's modulus of the organic film.   
     
     
         2 . The fabrication method as recited in  claim 1 , wherein the formation of the magnetic film includes forming one layer of the organic film on the base body. 
     
     
         3 . The fabrication method as recited in  claim 1 , wherein the formation of the magnetic film includes forming one layer of the ferrite film on the base body. 
     
     
         4 . A magnetic film provided body comprising:
 a base body; and   a magnetic film provided on the base body,   wherein:   the magnetic film comprises at least one organic film and at least one ferrite film alternately layered; and   an adhesive strength between the organic film and the ferrite film is 0.1 kN/m or more.   
     
     
         5 . The magnetic film provided body as recited in  claim 4 , wherein:
 the organic film of the magnetic film is provided directly on the base body; and   an adhesive strength between the organic film and the base body is 0.1 kN/m or more.   
     
     
         6 . The magnetic film provided body as recited in  claim 4 , wherein:
 the base body is made of organic material;   the ferrite film of the magnetic film is provided directly on the base body; and   an adhesive strength between the ferrite film and the base body is 0.1 kN/m or more.   
     
     
         7 . The magnetic film provided body as recited in  claim 4 , wherein:
 each ferrite film has a thickness of 20 μm;   each organic film has a thickness of 0.1 μm to 2.0 μm, both inclusive; and   the organic film has a ratio t/E of 0.025 μm/GPa or more, where “t” indicates the thickness organic film, and “E” indicates Young's modulus of the organic film.   
     
     
         8 . The magnetic film provided body as recited in  claim 7 , wherein a total thickness of the at least one ferrite film included in the magnetic film is 1 μm or more. 
     
     
         9 . The magnetic film provided body as recited in  claim 4 , wherein the ferrite film(s) is one formed through a ferrite plating method.