Method and system for providing dynamic actuation of a write head using a strain element
AssigneeWestern Digital (Fremont), LLC
InventorYingjian Chen
Life of this patent
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Abstract
A method and system for actuating a pole tip of a write head is disclosed. The write head includes a first pole and a second pole. The method and system include providing a strain element and providing a coil. The strain element is electrically insulated from the first pole and the second pole. The strain element is further configured to produce a strain for actuating the pole tip in response to a magnetic field. The coil carries a current capable of producing the magnetic field at the strain element.
Claims23
A system for actuating a pole tip of a write head, the write head including a first pole and a second pole, the system comprising:
- a strain element electrically insulated from the first pole and the second pole, the strain element being configured to produce a strain for actuating the pole tip in response to a magnetic field;
- and
- a coil for carrying a current capable of producing the magnetic field at the strain element.
A write head comprising:
- a first pole;
- a second pole;
- a write coil residing between the first pole and the second pole;
- a write gap residing between a portion of the first pole and a portion of the second pole;
- a strain element electrically insulated from the second pole, the strain element being configured to produce a strain for actuating the portion of the first pole and the portion of the second pole in response to a magnetic field;
- and
- a strain element coil for carrying a current capable of producing the magnetic field at the strain element.
A method for dynamically actuating a pole tip of a write head, the write head including a first pole and a second pole, the method comprising:
- (a) providing a strain element on the pole tip;
- and
- (b) driving a current in a strain element coil during a write cycle of the write head, the current capable of producing a magnetic field at the strain element, the strain element being configured to produce a strain for actuating the pole tip in response to the magnetic field.
A method for providing a system for actuating a pole tip of a write head, the write head including a first pole and a second pole, the method comprising:
- (a) providing a first insulator on the second pole;
- (b) providing a strain element on the first insulator, the strain element being configured to produce a strain for actuating the pole tip in response to a magnetic field;
- (c) providing a second insulator on the strain element;
- and
- (e) providing a strain element coil on the second insulator, the strain element coil for carrying a current capable of producing the magnetic field at the strain element.
Dependencies are inferred from the claim text.