Sony Corporation

You Iwasaki

Masatoshi Hayakawa

Kazuhiko Hayashi

Hideki Matsuda

Yoshitaka Ochiai

Wataru Ishikawa

Koichi Aso

Kouichi Aso

Disclosed is a soft magnetic thin film which has superior soft magnetic characteristics and high saturation magnetic flux density. The magnetic thin film is formed by physical vapor deposition process and composed of Fe, Ga, and Si with optional inclusion of Co, Ru, or Cr.

Soft magnetic thin film

A magnetic alloy thin film consisting essentially of a first Fe-Al-Si or Fe-Ni alloy thin film of high permeability and a second Fe-Si alloy thin film directly formed on the first thin film and having high saturation magnetic flux density. The ratio in thickness of the first and second films is preferably in the range of from 1:0.1 to 2.

Magnetic composite film

A magnetic structure having improved permeability characteristics at very high frequencies and comprising a plurality of magnetic metal layers, together with electrically insulating layers which are interposed between successive magnetic metal layers to form a laminate therewith, and at least one conductive strip electrically connecting together at least two of the magnetic metal layers, the conductive strip being of lesser width than the surface on which it is located, and serving to reduce eddy current losses.

Magnetic material having high permeability in the high frequency range

Growing community of inventors

Kanagawa, Japan

You Iwasaki