Back to results
US 11,763,846 B2Granted
Magnetic devices with overcoat that includes a titanium oxynitride layer
AssigneeSeagate Technology LLC
InventorsZhuoyuan Wu, Edwin F. Rejda, Richard T. Greenlee
Life of this patent
Estimating the term…
Abstract
Described are magnetic recording heads that include an overcoat that includes a titanium oxynitride (TiON) layer.
Claims20
A method of forming a heat assisted magnetic recording head, the method comprising:
- providing a heat assisted magnetic recording head substrate comprising an air-bearing surface that includes a magnetic write pole and a near field transducer,
- placing an overcoat on the air bearing surface to cover a portion of the air bearing surface at an area of the near field transducer, the write pole, or both, the overcoat comprising a titanium oxynitride layer having an optical absorbance constant (k) below 0.2 at 830 nanometers.
A method of forming a heat assisted magnetic recording head, the method comprising:
- providing a heat assisted magnetic recording head substrate comprising an air-bearing surface that includes a magnetic write pole and a near field transducer,
- placing an overcoat on the air bearing surface to cover a portion of the air bearing surface at an area of the near field transducer, the write pole, or both, the overcoat comprising a titanium oxynitride layer,
- wherein the titanium oxynitride layer is represented as TixOyNz wherein
- x is in a range from 0.7 to 1.3,
- y is in a range from 0.8 to 1.2, and
- z is in a range from 0.9 to 1.2,
- and wherein the titanium oxynitride layer has an index of refraction of at least 1.9 and an optical absorbance constant (k) below 0.2 at 830 nanometers.
4 more elements
Dependencies are inferred from the claim text.