Perpendicular recording magnetic head with a write shield magnetically coupled to a first pole piece

1. A perpendicular recording write head, which has a head surface, comprising:

ferromagnetic first and second pole pieces;

a back gap which is recessed from the head surface;

the first and second pole pieces being connected at said back gap;

an insulation stack with a write coil layer embedded therein located between the first and second pole pieces and located between the head surface and said back gap;

the second pole piece having a pole tip which is located at the head surface;

a ferromagnetic write shield layer;

a nonmagnetic isolation layer located between the second pole piece and the write shield layer;

at least one ferromagnetic stud magnetically connecting the first pole piece layer and the write shield layer; and

said at least one ferromagnetic stud being located between the head surface and said insulation stack.

2. A perpendicular recording write head as claimed in claim 1 comprising:

the pole tip being laterally surrounded by a reactive ion etchable (RIEable) mask; and

an adhesion layer on the RIEable mask.

3. A perpendicular recording write head as claimed in claim 2 wherein the adhesion layer is selected from the group consisting of Ta, W and Mo.

4. A perpendicular recording write head as claimed in claim 3 wherein the RIEable mask is selected from the group consisting of Mo, W, Ta 2 O 3 , SiON X , SiO 2 and Si 3 N 4 .

5. A perpendicular recording write head as claimed in claim 4 wherein the adhesion layer is Ta.

6. A perpendicular recording write head as claimed in claim 5 further comprising:

a second ferromagnetic stud located between the head surface and the insulation stack and magnetically connecting the first pole piece layer and the write shield layer; and

said at least one ferromagnetic stud and the second ferromagnetic stud being laterally spaced from one another with one on each side of the pole tip.

7. A perpendicular recording write head as claimed in claim 1 further comprising:

the second pole piece layer having first and second layers with the first layer being located between the insulation stack and the second layer;

the first layer being recessed from the head surface; and

the second layer having said pole tip at the head surface.

8. A perpendicular recording write head as claimed in claim 7 further comprising:

a second ferromagnetic stud located between the head surface and the insulation stack and magnetically connecting the first pole piece layer and the write shield layer; and

said at least one ferromagnetic stud and the second ferromagnetic stud being laterally spaced from one another with one on each side of the pole tip.

9. A perpendicular recording write head as claimed in claim 8 further comprising:

the pole tip being laterally surrounded by a reactive ion etchable (RIEable) mask; and

an adhesion layer on the RIEable mask.

10. A perpendicular recording write head as claimed in claim 9 wherein the RIEable mask is selected from the group consisting of Mo, W, Ta 2 O 3 , SiON X , SiO 2 and Si 3 N 4 .

11. A perpendicular recording write head as claimed in claim 10 wherein the adhesion layer is Ta.

12. A magnetic head assembly that has a head surface, a read head and a perpendicular recording write head, comprising:

the read head including:

ferromagnetic first and second shield layers; and

a read sensor located between the first and second shield layers;

the perpendicular recording write head including:

ferromagnetic first and second pole pieces wherein the first pole piece layer is a common layer with the second shield layer;

a back gap which is recessed from the head surface;

the first and second pole pieces being connected at said back gap;

an insulation stack with a write coil layer embedded therein located between the first and second pole pieces and located between the head surface and said back gap;

the second pole piece having a pole tip which is located at the head surface;

a ferromagnetic write shield layer;

a nonmagnetic isolation layer located between the second pole piece and the write shield layer;

at least one ferromagnetic stud magnetically connecting the first pole piece layer and the write shield layer; and

said at least one ferromagnetic stud being located between the head surface and said insulation stack.

13. A magnetic head assembly as claimed in claim 12 further comprising:

the second pole piece layer having first and second layers with the first layer being located between the insulation stack and the second layer;

the first layer being recessed from the head surface; and

the second layer having said pole tip at the head surface.

14. A magnetic head assembly as claimed in claim 13 further comprising:

a second ferromagnetic stud located between the head surface and the insulation stack and magnetically connecting the first pole piece layer and the write shield layer; and

said at least one ferromagnetic stud and the second ferromagnetic stud being laterally spaced from one another with one on each side of the pole tip.

15. A magnetic head assembly as claimed in claim 14 further comprising:

a reactive ion etchable (RIEable) mask laterally surrounding the pole tip; and

an adhesion layer on the RIEable mask.

16. A magnetic head assembly as claimed in claim 15 wherein the adhesion layer is selected from the group consisting of Ta, W and Mo.

17. A magnetic head assembly as claimed in claim 16 wherein the RIEable mask is selected from the group consisting of Mo, W, Ta 2 O 3 , SiON X , SiO 2 and Si 3 N 4 .

18. A magnetic head assembly as claimed in claim 17 wherein the adhesion layer is Ta.