Microwave- assisted recording head with stable oscillation
AssigneeHGST Netherlands B.V.
InventorsKatsuro Watanabe, Yohji Maruyama
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Abstract
A magnetic recording head for microwave-assisted magnetic recording is disclosed. In one embodiment, a magnetic recording head is for applying a magnetic field from a main pole of said magnetic recording head for recording data to a disk. Further comprising a spin torque oscillator adjacent to said magnetic recording head and is for generating a high-frequency magnetic field at a stable frequency and amplitude. Further comprising a capacitor connected to an upper electrode of said spin torque oscillator via a first resistor and a lower electrode of said spin torque oscillator via a second resistor.
Claims20
A magnetic recording head for microwave-assisted magnetic recording, comprising:
- a magnetic recording head for applying a magnetic field from a main pole of said magnetic recording head for recording data to a disk;
- a spin torque oscillator adjacent to said magnetic recording head for generating a high-frequency magnetic field at a stable frequency and amplitude;
- and
- a capacitor connected to an upper electrode of said spin torque oscillator via a first resistor and a lower electrode of said spin torque oscillator via a second resistor.
A disk drive for microwave-assisted magnetic recording, comprising:
- a housing;
- a disk in said housing for storing data;
- a magnetic recording head for applying a magnetic field from a main pole of said magnetic recording head for recording said data to said disk;
- a spin torque oscillator adjacent to said magnetic recording head for generating a high-frequency magnetic field at a stable frequency and amplitude;
- and
- a capacitor connected to an upper electrode of said spin torque oscillator via a first resistor and a lower electrode of said spin torque oscillator via a second resistor.
A magnetic recording head for microwave-assisted magnetic recording, comprising:
- a magnetic recording head for applying a magnetic field from a main pole of said magnetic recording head for recording data to a disk;
- a spin torque oscillator adjacent to said magnetic recording head for generating a high-frequency magnetic field at a stable frequency and amplitude;
- and
- a capacitor connected to an upper electrode of said spin torque oscillator via a first resistor and a lower electrode of said spin torque oscillator via a second resistor, and wherein a portion of said upper electrode of said spin torque oscillator constitutes an upper pole and a portion of said lower electrode of said spin torque oscillator constitutes a main pole.
Dependencies are inferred from the claim text.