Dual writer for advanced magnetic recording
The present disclosure generally relates to a magnetic media drive employing a magnetic recording head. The magnetic recording head comprises a first write head, a second write head, at least one read head, and a thermal fly height control element. The first write head is a wide writing write head comprising a first main pole and a first trailing shield. The second write head a narrow writing write head comprising a second main pole, a trailing gap, a second trailing shield, and one or more side shields. The first main pole has a shorter height and a greater width than the second main pole. The second main pole has a curved or U-shaped surface disposed adjacent to the trailing gap. The thermal fly height control element and the at least one read head are aligned with a center axis of the second main pole of the second write head.
1. A magnetic recording head, comprising:
a first write head, comprising:
a first main pole having a first height from a trailing edge of the first main pole to a leading edge of the first main pole; and
a first trailing shield disposed adjacent to the first main pole;
a second write head disposed adjacent to the first write head, comprising:
a second main pole having a second height from a trailing edge of the second main pole to a leading edge of the second main pole, wherein the first height of the first main pole of the first write head is shorter than the second height of the second main pole of the second write head;
a second trailing shield disposed adjacent to the second main pole; and
one or more side shields surrounding two or more surfaces of the second main pole;
one or more read heads, wherein a first read head of the one or more read heads is aligned with the second main pole of the second write head; and
a thermal fly height control element aligned with the second main pole of the second write head and the first read head.
2. The magnetic recording head of claim 1 , wherein a write width of the first write head is wider than that of the second write head.
3. The magnetic recording head of claim 1 , wherein the thermal fly height control element is disposed between the second main pole and the first read head.
4. The magnetic recording head of claim 1 , wherein the first write head and the second write head are vertically stacked and disposed in a stacked formation.
5. The magnetic recording head of claim 1 , wherein the first write head is disposed adjacent to the second write head in a cross-the-track direction in a side-by-side formation.
6. The magnetic recording head of claim 1 , wherein a second read head of the one or more read heads is offset from the second main pole in a direction towards the first main pole.
7. A data storage device comprising the magnetic recording head of claim 1 .
8. The magnetic recording head of claim 1 , wherein the first write head lacks one or more side shields surrounding the first main pole.
9. The magnetic recording head of claim 1 , wherein the second write head further comprises first side gaps surrounding one or more surfaces of the second main pole.
10. The magnetic recording head of claim 9 , wherein the first side gaps are disposed adjacent to the one or more side shields of the second main pole.
11. The magnetic recording head of claim 9 , wherein the first side gaps are disposed adjacent to the second trailing shield of the second main pole.
12. A magnetic recording head, comprising:
a first writing means having a first height in an along-the-track direction;
a second writing means disposed adjacent the first writing means, the second writing means having a second height in the along-the-track direction greater than the first height of the first writing means;
one or more side shields surrounding two or more surfaces of the second writing means;
one or more read heads, wherein a first read head of the one or more read heads is aligned with the second writing means; and
a thermal fly height control element aligned with the second writing means.
13. The magnetic recording head of claim 12 wherein the second writing means comprises a curved U-shaped surface.
14. The magnetic recording head of claim 12 , wherein the first writing means comprises a curved U-shaped surface.
15. The magnetic recording head of claim 12 , wherein the second writing means is configured to trim edges of tracks written by the first writing means.
16. A data storage device comprising the magnetic recording head of claim 12 .
17. The magnetic recording head of claim 12 , wherein the first writing means has a first width in a cross-track direction greater than a second width of the second writing means in the cross-track direction.
18. The magnetic recording head of claim 12 , wherein a second read head of the one or more read heads is offset from the second writing means in a direction towards the first writing means.