Patent ID: 10950257

Abstract:
A method of forming a spin torque assisted magnetic recording writer is disclosed wherein a spin flipping (STO) device is recessed from an air bearing surface. The STO device has a middle flux guiding layer with a magnetization that flips to a direction anti-parallel to the write gap field when a current of sufficient magnitude is applied from the trailing shield towards the main pole (MP) thereby increasing reluctance in the write gap to enhance writability. A STO stack is deposited and patterned to define a cross-track width on the MP tapered trailing side. Thereafter, the STO stack is patterned to define a STO device with a front side recessed from the air bearing surface, and a backside. A write gap is deposited surrounding the STO device, and has a thickness greater than or ≤ to STO thickness to enable design flexibility. Then, first and second trailing shields are formed.