Method of multi-angled bump processing for magnetic pole fabrication and systems thereof
View Patent ↗A system according to one embodiment includes a magnetic pole; a bump structure above the pole, the bump structure having a first surface oriented at a first angle between 1° and 89° from a plane of deposition of the pole, and a second surface oriented at a second angle between 1° and 89° from the plane of deposition of the pole, wherein the second angle is greater than the first angle; and a shield above the bump structure. A method according to one embodiment includes forming a bump layer above a magnetic pole; removing a portion of the bump layer for forming a step therein; and milling the bump layer for defining thereon a first surface oriented at a first angle between 1° and 89° from a plane of deposition of the bump layer, and a second surface oriented at a second angle between 1° and 89° from the plane of deposition of the bump layer, wherein the second angle is greater than the first angle.
1. A system, comprising:
a magnetic pole;
a bump structure above the pole, the bump structure having a first surface oriented at a first angle between about 1° and about 20° from the plane of deposition of the pole, and a second surface oriented at a second angle between 1° and 89° from the plane of deposition of the pole, wherein the second angle is greater than the first angle; and
a shield above the bump structure.
2. A system as recited in claim 1 , wherein the first angle is between about 5° and about 10° from the plane of deposition of the pole.
3. A system comprising:
a magnetic pole;
a bump structure above the pole, the bump structure having a first surface oriented at a first angle between 1° and 89° from a plane of deposition of the pole, and a second surface oriented at a second angle between about 20° and about 89° from the plane of deposition of the pole, wherein the second angle is greater than the first angle; and
a shield above the bump structure.
4. A system as recited in claim 3 , wherein the second angle is greater than about 45° from the plane of deposition of the pole.
5. A system comprising:
a magnetic pole;
a bump structure above the pole, the bump structure having a first surface oriented at a first angle between 1° and 89° from a plane of deposition of the pole, and a second surface oriented at a second angle between 1° and 89° from the plane of deposition of the pole, wherein the second angle is greater than the first angle; and
a shield above the bump structure, wherein the shield is a wrap around shield.
6. A system as recited in claim 5 , wherein the pole is a laminate structure.
7. A method comprising:
forming a bump layer above a magnetic pole;
removing a portion of the bump layer for forming a step therein: and
milling the bump layer for defining thereon a first surface oriented at a first angle between 1° and 89° from a plane of deposition of the bump layer, and a second surface oriented at a second angle between and 89° from the plane of deposition of the bump layer, wherein the second angle is greater than the first angle,
wherein the angle of the first surface is at least partially a result of shadowing of the milling by the step.
8. A method comprising:
forming a bump layer above a magnetic pole;
removing a portion of the bump layer for forming a step therein; and
milling the bump layer for defining thereon a first surface oriented at a first angle between 1° and 89° from a plane of deposition of the bump layer, and a second surface oriented at a second angle between 1° and 89° from the plane of deposition of the bump layer, wherein the second angle is greater than the first angle, wherein the milling is performed at an angle of between about 30° and about 60° from normal to the plane of deposition of the bump layer.
9. A method, comprising:
forming a bump layer above a magnetic pole;
removing a portion of the bump layer for forming a step therein;
milling the bump layer for defining thereon a first surface oriented at a first angle between 1° and 89° from a plane of deposition of the bump layer, and a second surface oriented at a second angle between 1° and 89° from the plane of deposition of the bump layer, wherein the second angle is greater than the first angle; and
forming a magnetic shield above the bump layer.
10. A method as recited in claim 9 , further comprising forming a layer of nonmagnetic material above the magnetic pole, the bump layer being formed above the layer of nonmagnetic material.
11. A method as recited in claim 9 , wherein the bump layer is comprised of multiple layers.
12. A method as recited in claim 9 , wherein
removing the portion of the bump layer for forming the step therein comprises
masking the bump layer and etching an exposed portion of the bump layer.
13. A method as recited in claim 9 , further comprising forming a top gap layer above the bump layer.
14. A method as recited in claim 13 , wherein an upper surface of the top gap layer about conforms to a shape of the first and second surfaces of the bump layer.
15. A method as recited in claim 9 , wherein the shield is a wrap around shield.
16. A method as recited in claim 9 , wherein the first angle is between about 1° and about 20° from the plane of deposition of the pole.
17. A method as recited in claim 9 , wherein the second angle is between about 20° and about 89° from the plane of deposition of the pole.
18. A method as recited in claim 9 , wherein the pole is a laminate structure.