PERPENDICULAR MAGNETIC WRITE HEAD AND MAGNETIC RECORDING DEVICE

摘要

A trailing shield is provided on a trailing side of a magnetic pole with a non-magnetic gap layer in between, and an intermediate layer having negative uniaxial magnetocrystalline anisotropy is provided between the non-magnetic gap layer and the trailing shield. The intermediate layer has a magnetic property in which an easy axis of magnetization is provided in an in-plane direction and thus magnetization is likely to occur in that direction, whereas a difficult axis of magnetization is provided in a direction intersecting the in-plane direction and thus magnetization is less likely to occur in that direction. Accordingly, magnetic flux becomes difficult to excessively flow from the magnetic pole into the trailing shield.

主权项

1. A perpendicular magnetic write head comprising:
a magnetic pole; a trailing shield provided on a trailing side of the magnetic pole with a non-magnetic gap layer in between; and an intermediate layer provided between the non-magnetic gap layer and the trailing shield and having negative uniaxial magnetocrystalline anisotropy, wherein the intermediate layer is provided in an entire region in which the magnetic pole and the trailing shield face each other, and is in contact with the non-magnetic gap layer.