System and method for integration of magnetic lip and near field transducer in heat assisted magnetic recording write heads
View Patent ↗A system, according to one embodiment, includes a near field transducer having a conductive metal film and an aperture, and a magnetic lip adjacent the aperture. A back edge of the magnetic lip is positioned farther from a media facing surface than an upper portion of a back edge of the conductive metal film. Other systems, methods, and computer program products are described in additional embodiments.
1. A system, comprising:
a near field transducer having a conductive metal film and an aperture; and
a magnetic lip adjacent the aperture;
wherein a back edge of the magnetic lip is positioned farther from a media facing surface than an upper portion of a back edge of the conductive metal film.
2. The system as recited in claim 1 , wherein a portion of a back edge of the aperture positioned closest to the back edge of the conductive metal film is about aligned with the upper portion of the back edge of the conductive metal film.
3. The system as recited in claim 1 , wherein a back edge of the aperture is positioned farther from a media facing surface than an upper portion of a back edge of the conductive metal film.
4. The system as recited in claim 3 , wherein the back edge of the aperture is about aligned with the back edge of the magnetic lip.
5. The system as recited in claim 3 , wherein the aperture overlies the back edge of the magnetic lip, wherein the back edge of the aperture and the back edge of the conductive metal film lie along a common plane oriented along a plane of deposition of the conductive metal film.
6. The system as recited in claim 1 , wherein a back edge angle of the back edge of the conductive metal film is between 0 and 30 degrees.
7. A system, comprising:
a near field transducer having a conductive metal film and an aperture;
a magnetic lip adjacent the aperture; and
a waveguide positioned behind the back edge of the conductive metal film relative to the media facing surface,
wherein a back edge of the magnetic lip is positioned farther from a media facing surface than an upper portion of a back edge of the conductive metal film.
8. The system as recited in claim 1 , wherein the aperture has a C-shaped profile.
9. The system as recited in claim 1 , wherein the conductive metal film has a circular cross sectional shape with a notch extending therefrom.
10. The system as recited in claim 1 , wherein the back edge of the magnetic lip is positioned at least 10 nm farther from a media facing surface than an upper portion of a back edge of the conductive metal film.
11. The system as recited in claim 1 , wherein the conductive metal film is selected from a group consisting of gold, a gold alloy, silver, a silver alloy, aluminum, an aluminum alloy, copper, and a copper alloy.
12. A magnetic data storage system, comprising:
at least one magnetic head having the near field transducer and magnetic lip as recited in claim 1 ;
a magnetic medium;
a drive mechanism for passing the magnetic medium over the at least one magnetic head; and
a controller electrically coupled to the at least one magnetic head for controlling operation of the at least one magnetic head.
13. A method, comprising:
forming a conductive metal film;
forming an aperture adjacent to the conductive metal film;
forming a magnetic lip adjacent to the aperture; and
forming a waveguide behind the back edge of the conductive metal film relative to the media facing surface;
wherein a back edge of the magnetic lip is positioned farther from a media facing surface than an upper portion of a back edge of the conductive metal film.
14. The method as recited in claim 13 , wherein a portion of a back edge of the aperture positioned closest to the back edge of the conductive metal film is about aligned with the upper portion of the back edge of the conductive metal film.
15. The method as recited in claim 13 , wherein a back edge of the aperture is positioned farther from a media facing surface than an upper portion of a back edge of the conductive metal film.
16. The method as recited in claim 15 , wherein the back edge of the aperture is about aligned with the back edge of the magnetic lip.
17. The method as recited in claim 13 , wherein a back edge angle of the back edge of the conductive metal film is between 0 and 30 degrees.
18. The method as recited in claim 13 , wherein the back edge of the magnetic lip is positioned at least 10 nm farther from a media facing surface than an upper portion of a back edge of the conductive metal film.
19. The method as recited in claim 13 , wherein the conductive metal film is selected from a group consisting of gold, a gold alloy, silver, a silver alloy, aluminum, an aluminum alloy, copper, and a copper alloy.