Fujitsu Corporation

Takayuki Kubomiya

Shoji Ikeda

Masaaki Matsuoka

Yuji Uehara

Ikuya Tagawa

A magnetic head according to the present invention includes a write magnetic pole on which a magnetic film has been formed, and is characterized by the magnetic film being formed by alternately laminating magnetic layers, which have iron (Fe) and cobalt (Co) as main components, and insulating layers, the insulating layers being formed as discontinuous films. With this construction, it is possible to form a write magnetic pole that has a high Bs value and high permeability, so that it is possible to provide a magnetic head that can record onto a high-density medium with a high coercive force.

Magnetic head with alternately laminated (110)-orientation-inducing non-magnetic underlayers, magnetic layers, and discontinuous insulating layers

The magnetic film includes an FeCo layer, restrains erasing data by a magnetic field leaked from a magnetic pole, has high saturation magnetic flux density and soft magnetism and writes data with high recording density. The magnetic film for a magnetic head of the present invention comprises: a nonmagnetic layer including at least one selected from a group of Ru, Rh, Ir, Cr, Cu, Au, Ag, Pt and Pd; a magnetic layer including Fe and Co. Anisotropy magnetic field is 0.8 kA/m or more.

Magnetic film for magnetic head

A soft magnetic film includes a ferromagnetic layer. The ferromagnetic layer is laid over a non-magnetic substructure including ferromagnetic atoms. The uniaxial magnetic anisotropy may be established in the ferromagnetic layer. Since a magnetic property is not required in the substructure under the ferromagnetic layer, the soft magnetic film of this type may be utilized for purposes of wider variations.

Growing community of inventors

Kawasaki, Japan

Takayuki Kubomiya