Title:
【発明の名称】磁気ヘッド
Document Type and Number:
Japanese Patent JP3231313
Kind Code:
B2
Abstract:
PURPOSE:To obtain a magneto-resistance effect by impressing a bias magnetic field from an antiferromagnetic material to one magnetic layer. CONSTITUTION:A Cu electrode 31 is formed by an ion beam sputtering method and ion milling method on a nonmagnetic substrate. A lower magnetic layer 32 consisting of a C alloy, an intermediate layer 33 consisting of Al2O3, an upper magnetic layer 34 consisting of a C alloy, and a antiferromagnetic mate rial layer 35 consisting of Cr are successively formed on the Cu electrode 31. Steps are then flattened by a resin and a Cu electrode 36 is formed to come into contact with the antiferromagnetic layer 35. The magnetic field is impressed in the intra-surface direction perpendicular to the longitudinal direction of the Cu electrode by using a Helmholtz coil. A resistance change rate is increased in this way.
Inventors:
Ryoichi Nakatani
Masahiro Kitada
Hideo Tanabe
Noboru Shimizu
Masahiro Kitada
Hideo Tanabe
Noboru Shimizu
Application Number:
JP21890490A
Publication Date:
November 19, 2001
Filing Date:
August 22, 1990
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G11B5/39; H01L43/08; H01L45/00; (IPC1-7): G11B5/39
Domestic Patent References:
| JP261573A | ||||
| JP584931A |
Other References:
【文献】Proceedings of the International Symposium on Physics of Magnetic Materials(1987)p.303~306「Effect of spin-dependent tunneling on the magnetic properties of multilayered ferromagnetic thin films」
Attorney, Agent or Firm:
Yasuo Sakuta