Implementing integrated spin-torque oscillator and interface bias control for hard disk drives
AssigneeHGST Netherlands B.V.
InventorsJohn Thomas Contreras, Ikuya Tagawa, Albert John Wallash
Life of this patent
Estimating the term…
Abstract
A method, apparatus, and system for implementing spin integrated spin-torque oscillator (STO) with an interface bias control for hard disk drives. Bias circuitry for a spin-torque oscillator (STO) is integrated with a slider for microwave assisted magnetic recording (MAMR). The slider includes read and write transducers and the integrated STO bias circuitry controls a bias potential applied to a write return pole to the write transducer with respect to a disk.
Claims22
A method for implementing an integrated spin-torque oscillator (STO) with an interface bias control for hard disk drives comprising:
- providing integrated bias circuitry for the spin-torque oscillator (STO) coupled a slider for microwave assisted magnetic recording (MAMR);
- providing a read transducer and a write transducer with the slider;
- said write transducer including a write pole and a write return pole;
- and
- controlling a bias potential applied to said write return pole with respect to a disk media with said integrated STO bias circuitry.
An apparatus for implementing an integrated spin-torque oscillator (STO) with an interface bias control for hard disk drives comprising:
- a slider including a read transducer and a write transducer;
- said write transducer including a write pole and a write return pole;
- the spin-torque oscillator (STO) integrated with said slider for microwave assisted magnetic recording (MAMR);
- STO bias circuitry coupled to said slider and controlling a bias potential applied to said write return pole with respect to a disk media with said integrated STO bias circuitry.
A system for implementing an integrated spin-torque oscillator (STO) with an interface bias control for hard disk drives comprising:
- at least one disk;
- said disk including a disk media for storing data;
- a slider including a read transducer and a write transducer;
- said write transducer including a write pole and a write return pole;
- the spin-torque oscillator (STO) integrated with said slider for microwave assisted magnetic recording (MAMR);
- STO bias circuitry coupled to said slider and controlling a bias potential applied to said write return pole with respect to a disk media with said integrated STO bias circuitry.
Dependencies are inferred from the claim text.