| 摘要 |
PURPOSE:To obtain a magnetic head which has high permeability and high magnetic characteristics in a high frequency band together with highly saturated magnetic flux density and can be mass-produced, by producing a composite magnetic block containing an alloy magnetic material piece having highly saturated magnetic flux density and an oxide magnetic material piece having high permeability in a high frequency band and then slicing said block matter. CONSTITUTION:An alloy magnetic material piece 1 has the highly saturated magnetic flux density and an oxide magnetic material piece 2 has the high permeability at a high frequency band. The upper surface 1a of the piece 1 is polished up to a mirror surface and used as a gap counter face. Then a nonmagnetic thin film 7 is formed and used as a gap material. The gap counter faces of a composite magnetic material piece 4 of such a constitution are butted with each other. Under such conditions, a pierced hole 8 for winding is formed together with plural track holes 9. A glass rod is put into the hole 8 and heated at a high temperature and then cooled when a fused glass matter 12 is filled. Thus both pieces 4 are unified into a composite magnetic block matter 10. Then this matter 10 is sliced into magnetic heads.
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