Magnetic material and antenna device

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 Hk1 in a surface parallel to the substrate surface and a maximum anisotropy magnetic field Hk2 in a surface parallel to the substrate surface, the Hk2 is at least 40 Oe and a ratio Hk2/Hk1 is at least 3.

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 Fe or an Fe alloy, and an 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 ratio I(110)/Itotal of an intensity Itotal obtained by adding together all peak intensities attributed to diffraction crystal faces (110), (200), (211), (310), and (222) to a peak intensity I(110) attributed to the diffraction crystal surface (110), where the peak intensities are determined by XRD of a surface of the composite magnetic film, the ratio I(110)/Itotal is at least 0.8, and
• the composite magnetic film has a crystal face perpendicular to the substrate surface and oriented to a form plane {110} face.

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 Fe or an Fe alloy, and an 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 ratio I(110)/Itotal of an intensity Itotal obtained by adding together all peak intensities attributed to diffraction crystal faces (110), (200), (211), (310), and (222) to a peak intensity I(110) attributed to the diffraction crystal surface (110), where the peak intensities are determined by XRD of a surface of the composite magnetic film, the ratio I(110)/Itotal is at least 0.8, and
• the composite magnetic film comprises an aggregation area having a diameter of at least 1 μm and crystal orientations isotropically distributed, which is formed by aggregating a plurality of orientation areas each having a diameter of at most 100 nm, and each of the orientation areas including a plurality of columnar members each having a crystal face which is perpendicular to the substrate surface and is oriented to the form plane {110}.

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 at least a magnetic metal or a magnetic alloy selected from a group of Fe, Co, and Ni, and an inorganic insulator formed between the columnar members,
• wherein the columnar members each having an aspect ratio of at least 1.2 in a cross section perpendicular to the longitudinal direction of the columnar members account for at least 30% by volume in all the columnar members.

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 comprising a magnetic alloy comprising Fe and Co, and an inorganic insulator formed between the columnar members and consisting of an oxide of silicon and oxygen,
• wherein molar ratio of the magnetic alloy to silicon is between 90:10 and 95:5.