Reducing thermal protrusion of a near field transducer in an energy assisted magnetic recording head
AssigneeWestern Digital (Fremont), LLC
InventorsYufeng Hu, Wentao Yan
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Abstract
Methods of fabricating an energy-assisted magnetic recording (EAMR) head to compensate for a heat-induced protrusion of a near field transducer formed therein are disclosed. The methods can include applying optical power to the near field transducer to generate heat therein. The near field transducer protrudes beyond an air bearing surface of the EAMR head by the generated heat. The methods can further include removing a protruded portion of the near field transducer.
Claims12
A method of fabricating an energy assisted magnetic recording (EAMR) head to compensate for a heat-induced protrusion of a near field transducer formed therein, the method comprising:
- applying optical power to the near field transducer to generate heat therein, whereby the near field transducer protrudes beyond an air hearing surface of the EAMR head;
- and
- removing a protruded portion of the near field transducer,
- wherein applying the optical power comprises coupling light into a waveguide formed in the EAMR head and directing the coupled light to the near field transducer via the waveguide.
Dependencies are inferred from the claim text.