| 摘要 |
A spin valve head according to the present invention includes a spin valve stack having a free layer, a first spacer layer, a pinned layer and a pinning layer. The spin valve stack is configured to operate in a current perpendicular to plane (CPP) mode, wherein a sense current flows substantially perpendicular to a longitudinal plane of the first spacer layer. The spin valve head includes a first shield and a second shield coupled to opposing sides of the spin valve stack. The first and the second shields act as electrodes to couple the sense current to the spin valve stack. The first shield has a concave shape and substantially surrounds the free layer. The spin valve head also includes a second spacer layer and a layer of antiferromagnetic material. The second spacer layer is formed on the free layer. The layer of antiferromagnetic material is formed on the second spacer layer.
|
