MIG magnetic head structured to minimize pseudo-gap problem
AssigneeSanyo Electric Co., Ltd.
InventorsHoriyuki Okuda, Isao Tanaka, Jyoichi Tamada, Kazuo Ino, Takashi Ogura, Fumio Kameoka, Kouzo Ishihara
Life of this patent
Estimating the term…
Abstract
A parallel type MIG (Metal in Gap) magnetic head includes single-crystal ferrite core halves with a thin ferromagnetic film formed on the gap-forming face of at least one of the core halves. The core halves are joined together using a glass having an Fe content in the range of 2-13 at %. The crystalline geometry of the principal magnetic path forming faces and gap forming faces of the core halves is selected to minimize the pseudo-gap problem and to improve reproduction output.
Claims7
An improved magnetic head comprising a pair of ferrite magnetic core halves, at least one of said magnetic core halves having a thin ferromagnetic metal film on a gap-forming face, said thin ferromagnetic metal film disposed with a non-magnetic material relative to the other magnetic core half to form a magnetic gap, and said pair of magnetic core halves being joined together by means of glass located near said magnetic gap, wherein said glass has a Fe content in the range of 2-13 at % of the glass composition excluding oxygen.
Dependencies are inferred from the claim text.