Method for manufacturing magnetic sensing element having improved magnetic field sensitivity

摘要

A method for manufacturing magnetic sensing elements for use in magnetic sensors and hard disks. A ferromagnetic layer and a second antiferromagnetic layer are deposited on a nonmagnetic layer having a uniform thickness. The second antiferromagnetic layer is milled to form an indent. The resulting magnetic sensing element has a free magnetic layer reliably set in a single-magnetic-domain state in the track width direction.