Low moment material for magnetic recording head write pole

摘要

A write pole for a magnetic recording head, such as a perpendicular magnetic recording head, includes a first layer of material adjacent a second layer of material. In one embodiment, the first layer of material has a saturation magnetic moment less than about 1.0 T and the second layer of material has a saturation magnetic moment greater than the saturation magnetic moment of the first layer of material. The first layer of material may include (NiFe)_100−yX_y, wherein X comprises Cr, Cu and/or Ti and wherein y is in the range of about 2 to about 50.