Patent ID: 7713641

Claim:
A magnetic material comprising: a substrate; and a composite magnetic film formed on the substrate and comprising a plurality of columnar members formed on the substrate and having a longitudinal direction perpendicular to a surface of the substrate, each of the columnar members containing a magnetic metal or a magnetic alloy selected from at least one of Fe, Co, and Ni, and at least one inorganic insulator formed between the columnar members and selected from an oxide, a nitride, and fluoride of metal, wherein the composite magnetic film has a minimum anisotropy magnetic field Hk 1 in a surface parallel to the substrate surface and a maximum anisotropy magnetic field Hk 2 in a surface parallel to the substrate surface, a ratio Hk 2 /Hk 1 is greater than 1, and the composite magnetic film has crystal orientations isotropically distributed in the surface parallel to the substrate surface.