Method of manufacturing a ferrite magnetic film structure having magnetic anisotropy

Abstract

A ferrite magnetic film structure exhibiting a magnetic anisotropy, the ferrite magnetic film structure comprising, a substrate provided on one main surface thereof with a groove-like recessed portion and with a ridge-like projected portion located neighboring to the groove-like recessed portion, and a ferrite magnetic film constituted by a continuous film having a substantially flat upper surface and formed on one main surface of the substrate, wherein the ferrite magnetic film structure meets the following conditions: (a/(a+b))(h/(t−h))≧0.047 1≧(a+b) where “a” is a width of the ridge-like projected portion, b is a width of the groove-like recessed portion, h is a height of step between the groove-like recessed portion and the ridge-like projected portion, t is a thickness of the ferrite magnetic film at the recessed portion, and l is a length of the recessed portion and of the projected portion.

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