Patent ID: 7973630

Claim:
A thin film magnetic device comprising: a thin film coil extending along a plane; and one or more magnetic films disposed above or below or both of them of the thin film coil, and having anisotropic magnetization along a layer plane of the magnetic film, wherein scratch-like grooves extending along an extending direction of the thin film coil are formed on a surface or a back or both of them of the magnetic film, the scratch-like grooves are formed in a discontinuous manner, the scratch-like grooves are intermittently formed in lines along a coil conductor part, and an extending area of the thin film coil is divided into four divided areas along a winding direction of the thin film coil, the four divided areas consisting of: a first pair of divided areas located along a crisscross line direction, the scratch-like grooves being not formed on the magnetic films in the first pair of divided areas, and a second pair of divided areas located along another crisscross line direction, the scratch-like grooves being formed on the magnetic films in the second pair of divided areas, the thin film magnetic device further comprising: nonmagnetic films formed at underside of the magnetic films only in the first pair of divided areas.