| 摘要 |
A magnetic head including a spin bulb magnetoresistive element of laminated ferri structure having enhanced performance. The magnetic head comprises a substrate having an air bearing surface, a free layer arranged perpendicularly to the air bearing surface above the substrate to define the element height in the perpendicular direction and formed of a ferromagnetic layer such that the direction of magnetization can be turned depending on the external magnetic field, a reference layer arranged in parallel with the free layer and formed of a ferromagnetic layer, a first intermediate layer arranged between the free layer and the reference layer to separate both layers magnetically, a pin layer arranged in parallel with the reference layer on the side reverse to the free layer and formed of a ferromagnetic layer to have the length in the element height direction longer than that of the reference layer, a second intermediate layer arranged between the reference layer and the pin layer to constitute a laminated ferri structure together with the reference layer and the pin layer, and an antiferromagnetic layer laminated on the pin layer and fixing the direction of magnetization of the pin layer wherein the free layer, the reference layer and the pin layer constitute the spin bulb magnetoresistive effect element.
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