Recording head for heat assisted magnetic recording with a side lobe blocker
View Patent ↗An apparatus includes a waveguide having a core layer, a near field transducer having an end positioned adjacent to a first surface, a first magnetic pole having an end positioned adjacent to the first surface, and a side lobe blocker adjacent to the first surface and having portions on opposite sides of the first magnetic pole and the near field transducer, wherein the side lobe blocker forms an aperture at an end of the core layer adjacent to the first surface.
1. An apparatus comprising:
a waveguide having a core layer;
a near field transducer having an end positioned adjacent to a first surface;
a first magnetic pole having an end positioned adjacent to the first surface; and
a side lobe blocker positioned adjacent to the first surface and having portions on opposite sides of the first magnetic pole and the near field transducer, wherein the side lobe blocker forms an aperture at an end of the core layer adjacent to the first surface.
2. The apparatus of claim 1 , wherein a portion of the near field transducer is positioned in the aperture.
3. The apparatus of claim 1 , wherein a heat sink is positioned adjacent to the first magnetic pole, and the side lobe blocker is a part of the heat sink.
4. The apparatus of claim 1 , wherein the side lobe blocker comprises:
a first portion positioned adjacent to the first surface and adjacent to a first side of the first magnetic pole opposite the near field transducer;
a second portion positioned adjacent to the first surface and adjacent to a second side of the first magnetic pole; and
a third portion positioned adjacent to the first surface and adjacent to a third side of the first magnetic pole.
5. The apparatus of claim 4 , wherein the second and third portions are further positioned on opposite sides of the near field transducer.
6. The apparatus of claim 5 , wherein the side lobe blocker further comprises:
a first tab connected to the second portion; and
a second tab connected to the third portion.
7. The apparatus of claim 4 , wherein the second and third portions have a thickness in a range of from about 30 nm to about 1000 nm.
8. The apparatus of claim 1 , wherein the thickness of the side lobe blocker at an end of the core layer is in a range of from about 20 nm to about 500 nm.
9. The apparatus of claim 1 , wherein the side lobe blocker comprises at least one of Cr, Rh or Ru.
10. An apparatus comprising:
a near field transducer having an end positioned adjacent to a first surface;
a first magnetic pole having an end positioned adjacent to the first surface; and
a heat sink positioned adjacent to the first surface and having portions on opposite sides of the first magnetic pole and the near field transducer, wherein the heat sink forms an aperture adjacent to the first surface.
11. The apparatus of claim 10 , wherein a portion of the near field transducer is positioned in the aperture.
12. The apparatus of claim 10 , wherein the heat sink comprises:
a first portion positioned adjacent to the first surface and adjacent to a first side of the first magnetic pole opposite the near field transducer;
a second portion positioned adjacent to the first surface and adjacent to a second side of the first magnetic pole; and
a third portion positioned adjacent to the first surface and adjacent to a third side of the first magnetic pole.
13. The apparatus of claim 12 , wherein the second and third portions are further positioned on opposite sides of the near field transducer.
14. The apparatus of claim 13 , wherein the heat sink further comprises:
a first tab connected to the second portion; and
a second tab connected to the third portion.
15. The apparatus of claim 12 , wherein the second and third portions have a thickness in a range of from about 30 nm to about 1000 nm.
16. The apparatus of claim 10 , wherein the thickness of the heat sink portion adjacent to the aperture is in a range of from about 20 nm to about 500 nm.
17. The apparatus of claim 1 , wherein the heat sink comprises at least one of Cr, Rh or Ru.
18. An apparatus comprising:
a storage medium;
a recording head including a waveguide having a core layer, a near field transducer having an end positioned adjacent to an air bearing surface, a first magnetic pole having an end positioned adjacent to the air bearing surface, and a side lobe blocker adjacent to the air bearing surface and having portions on opposite sides of the first magnetic pole and the near field transducer, wherein the side lobe blocker forms an aperture at an end of the core layer adjacent to the air bearing surface; and
a positioning member for positioning the recording head adjacent to the storage medium.
19. The apparatus of claim 18 , wherein the side lobe blocker comprises:
a first portion positioned adjacent to the air bearing surface and adjacent to a first side of the first magnetic pole opposite the near field transducer;
a second portion positioned adjacent to the air bearing surface and adjacent to a second side of the first magnetic pole; and
a third portion positioned adjacent to the air bearing surface and adjacent to a third side of the first magnetic pole.
20. The apparatus of claim 19 , wherein the second and third portions are further positioned on opposite sides of the near field transducer, and the side lobe blocker further comprises:
a first tab connected to the second portion; and
a second tab connected to the third portion.