Patent ID: 6970331

Claim:
A magnetic head comprising: a first module having a magneto-resistive (MR) element formed on a wafer having a grating directed along a first direction, the MR element of the first module having magnetic end regions, wherein magnetization of the magnetic end regions of the MR element of the first module is directed along the first direction, wherein the MR element of the first module is biased with a first bias current directed along a second direction that is parallel or anti-parallel to the first direction such that desired magnetically stable operation of the MR element of the first module is obtained with one or the other or both of the directions; and a second module having a MR element formed on a wafer having a grating directed along the first direction, the MR element of the second module having magnetic end regions, wherein magnetization of the magnetic end regions of the MR element of the second module is directed along the second direction, wherein the MR element of the second module is biased with a second bias current directed along a direction that is the opposite of the first bias current direction in the first module.