Granted Patent B1

US 8,179,636 · App. 12/042,691 · Granted May 15, 2012

Abstract

Claims (57)

1. A magnetic transducer for recording to media, the magnetic transducer comprising:

a first pole;

a main pole having a first media-facing surface including a recessed portion and a write portion;

an auxiliary pole magnetically coupled with the main pole, the auxiliary pole having a second media-facing surface including a first portion and a second portion, the first portion in proximity to the write portion of the first media-facing surface of the main pole, the second portion in proximity to and recessed from the recessed portion of the first media-facing surface of the main pole;

at least one coil for energizing the main pole; and

an additional auxiliary pole magnetically coupled with the main pole, the main pole residing between the first pole and the additional auxiliary pole.

2. The magnetic transducer of claim 1 wherein the write portion includes a pole tip having a front configured to be in closest proximity to the media.

3. The magnetic transducer of claim 2 wherein the second portion of the second media-facing surface of the auxiliary pole is recessed from the pole tip by an amount that increases with increasing distance from the pole tip.

4. The magnetic transducer of claim 3 wherein the amount increases linearly.

5. The magnetic transducer of claim 3 wherein the amount increases in steps.

6. The magnetic transducer of claim 2 wherein the write portion of the first media-facing surface of the main pole includes a flared region having the pole tip and an angled portion.

7. The magnetic transducer of claim 6 wherein the first portion of the second media-facing surface of the auxiliary pole is recessed from the flared region.

8. The magnetic transducer of claim 7 wherein the second portion of the second media-facing surface of the auxiliary pole is recessed from the pole tip by an amount that increases with increasing distance from the pole tip.

9. The magnetic transducer of claim 8 wherein the amount increases linearly.

10. The magnetic transducer of claim 8 wherein the amount increases in steps.

11. The magnetic transducer of claim 6 wherein the first portion of the second media-facing surface of the auxiliary pole is conformal with the angled portion.

12. The magnetic transducer of claim 11 wherein the second portion of the second media-facing surface of the auxiliary pole is recessed from the pole tip by an amount that increases with increasing distance from the pole tip.

13. The magnetic transducer of claim 12 wherein the amount increases linearly.

14. The magnetic transducer of claim 12 wherein the amount increases in steps.

15. The magnetic transducer of claim 1 wherein at least the first portion of the second media-facing surface of the auxiliary pole is tapered to recede from the first media-facing surface of the main pole as a distance from the main pole increases.

16. The magnetic transducer of claim 1 wherein the main pole resides between the auxiliary pole and the first pole.

17. The magnetic transducer of claim 1 wherein the auxiliary pole resides between the main pole and the first pole.

18. The magnetic transducer of claim 11 further comprising: A magnetic transducer for recording to media, the magnetic transducer comprising:

a first pole;

a main pole having a first media-facing surface including a recessed portion and a write portion, the write portion includes a pole tip having a front configured to be in closest proximity to the media, and a flared region having the pole tip and an angled portion;

an auxiliary pole magnetically coupled with the main pole, the auxiliary pole having a second media-facing surface including a first portion and a second portion, the first portion in proximity to the write portion of the first media-facing surface of the main pole, the second portion in proximity to and recessed from the recessed portion of the first media-facing surface of the main pole, the first portion of the second media-facing surface being conformal with the angled portion of the main pole;

at least one coil for energizing the main pole; and

an additional auxiliary pole magnetically coupled with the main pole, the main pole residing between the first pole and the additional auxiliary pole.

19. A magnetic transducer for recording to media, the magnetic transducer comprising:

a first pole;

a main pole having a first media-facing surface including a recessed portion and a write portion, the write portion includes a pole tip having a front configured to be in closest proximity to the media, and a flared region having the pole tip and an angled portion;

an auxiliary pole magnetically coupled with the main pole, the auxiliary pole having a second media-facing surface including a first portion and a second portion, the first portion in proximity to the write portion of the first media-facing surface of the main pole, the second portion in proximity to and recessed from the recessed portion of the first media-facing surface of the main pole, the first portion of the second media-facing surface being conformal with the angled portion of the main pole;

at least one coil for energizing the main pole, the second portion of the second media-facing surface being recessed from the pole tip by an amount that increases with increasing distance from the pole tip; and

an additional auxiliary pole magnetically coupled with the main pole, the main pole residing between the first pole and the additional auxiliary pole, wherein the additional auxiliary pole includes

a third media-facing surface including a third portion and a fourth portion, the third portion in proximity to the write portion of the main pole, the fourth portion in proximity to and recessed from the recessed portion of the main pole.

20. A magnetic transducer for recording to media, the magnetic transducer comprising:

a first pole;

a main pole having a first media-facing surface including a recessed portion and a write portion, the write portion includes a pole tip having a front configured to be in closest proximity to the media;

a first auxiliary pole magnetically coupled with the main pole, the first auxiliary pole having a second media-facing surface including a first portion and a second portion, the first portion in proximity to the write portion of the main pole, the second portion in proximity to and recessed from the recessed portion of the main pole, at least the first portion of the second media-facing surface of the auxiliary pole being tapered to recede from the first media-facing surface of the main pole as a first distance from the main pole increases, the second portion of the second media-facing surface of the auxiliary pole being recessed from the pole tip by a first amount that increases with increasing distance from the pole tip;

a second auxiliary pole magnetically coupled with the main pole, the second auxiliary pole having a third media-facing surface including a third portion and a fourth portion, the third portion in proximity to the write portion of the main pole, the fourth portion in proximity to and recessed from the recessed portion of the main pole, at least the third portion of the third media-facing surface of the auxiliary pole being tapered to recede from the first media-facing surface of the main pole as a second distance from the main pole increases, the third portion of the third media-facing surface of the auxiliary pole being recessed from the pole tip by a second amount that increases with increasing distance from the pole tip;

at least one coil for energizing the main pole.

21. A method for providing a magnetic transducer for recording to media, the method comprising:

providing a first pole;

providing a main pole having a first media-facing surface including a recessed portion and a write portion;

providing an auxiliary pole magnetically coupled with the main pole, the auxiliary pole having a second media-facing surface including a first portion and a second portion, the first portion in proximity to the write portion of the main pole, the second portion in proximity to and recessed from the recessed portion of the main pole; and

providing at least one coil for energizing the main pole; and

providing an additional auxiliary pole magnetically coupled with the main pole, the main pole residing between the first pole and the additional auxiliary pole, the auxiliary pole residing between the main pole and the first pole.

22. The method of claim 21 wherein the auxiliary pole providing further includes:

recessing the second portion of the second media-facing surface of the auxiliary pole from the pole tip by an amount that increases with increasing distance from the pole tip.

23. The method of claim 21 wherein the auxiliary pole providing further includes:

tapering at least the first portion of the second media-facing surface of the auxiliary pole to recede from the first media-facing surface of the main pole.

24. A method for providing a magnetic transducer for recording to media, the method comprising:

providing a first pole;

providing a main pole having a first media-facing surface including a recessed portion and a write portion, the write portion includes a pole tip having a front configured to be in closest proximity to the media;

providing a first auxiliary pole magnetically coupled with the main pole, the first auxiliary pole having a second media-facing surface including a first portion and a second portion, the first portion in proximity to the write portion of the main pole, the second portion in proximity to and recessed from the recessed portion of the main pole, at least the first portion of the second media-facing surface of the auxiliary pole being tapered to recede from the first media-facing surface of the main pole as a first distance from the main pole increases, the second portion of the second media-facing surface of the auxiliary pole being recessed from the pole tip by a first amount that increases with increasing distance from the pole tip;

providing a second auxiliary pole magnetically coupled with the main pole, the second auxiliary pole having a third media-facing surface including a third portion and a fourth portion, the third portion in proximity to the write portion of the main pole, the fourth portion in proximity to and recessed from the recessed portion of the main pole, at least the third portion of the third media-facing surface of the auxiliary pole being tapered to recede from the first media-facing surface of the main pole as a second distance from the main pole increases, the third portion of the third media-facing surface of the auxiliary pole being recessed from the pole tip by a second amount that increases with increasing distance from the pole tip;

providing at least one coil for energizing the main pole.

Assignments (9)