Patent ID: 9230571
Filing Date: 2016-01-05
CPC Classification: G11B

Claim Text:
1. A microwave assisted magnetic recording (MAMR) structure that includes a write head, comprising: (a) a main pole that generates a magnetic flux field which is directed through a pole tip at an air bearing surface (ABS) and into a magnetic medium to write one or more bits, the magnetic flux has a gap field component that is directed across a spin torque oscillator (STO) and into a write shield; (b) the write shield with a side along the ABS that collects magnetic flux which has passed through the magnetic medium and written the one or more bits; (c) an external current source that produces a direct current bias or pulsed current bias between the main pole and write shield, and across the STO; and (d) the STO that is formed along the ABS and generates a if field on the magnetic medium and thereby assists the writing to one or more bits, the STO comprises;